Lecture 1	The prerequisites Introduction	00:00:53 Duration
	Lecture 2	How to 'add' numbers	00:04:16 Duration
	Lecture 3	How to 'subtract' numbers	00:03:13 Duration
	Lecture 4	How to 'multiply' numbers	00:07:09 Duration
	Lecture 5	Multiplying by 10, 100, 1000,	00:05:54 Duration
	Lecture 6	How to 'divide' numbers	00:10:15 Duration
	Lecture 7	The division algorithm	00:05:20 Duration
	Lecture 8	Multiple of divisor nearest to the dividend	00:04:56 Duration
	Lecture 9	Divisibility tests of numbers	00:08:39 Duration
	Lecture 10	How to do 'cancellations' in division	00:06:35 Duration
	Lecture 11	The 'VBODMAS' rule	00:06:27 Duration
	Lecture 12	Problem session On 'VBODMAS'	00:10:13 Duration

	Lecture 1	'Number' vs 'Numeral' vs 'Numeration'	00:12:23 Duration
	Lecture 2	Numbers	00:07:57 Duration
	Lecture 3	Numerals	00:11:55 Duration
	Lecture 4	Roman Numeral System Introduction	00:04:09 Duration
	Lecture 5	Roman Numeral System Rule 1	00:06:32 Duration
	Lecture 6	Roman Numeral System Rule 2	00:04:07 Duration
	Lecture 7	Roman Numeral System Rule 3	00:05:40 Duration
	Lecture 8	Roman Numeral System Rule 4	00:09:55 Duration
	Lecture 9	Roman Numeral System All 4 rules	00:10:46 Duration
	Lecture 10	Problem session On 4 rules	00:03:42 Duration
	Lecture 11	Roman Numeral System - 1 to 1000	00:14:01 Duration
	Lecture 12	Roman Numeral System - 1001 to 3999	00:17:55 Duration
	Lecture 13	Problem session Hindu-Arabic to Roman	00:09:40 Duration
	Lecture 14	Roman Numeral System Roman to Hindu-Arabic	00:08:50 Duration
	Lecture 15	Problem session Roman to Hindu-Arabic	00:20:03 Duration
	Lecture 16	Roman Numeral System - beyond 3999	00:16:05 Duration
	Lecture 17	Roman Numeral System Demerits	00:06:33 Duration
	Lecture 18	Hindu-Arabic Numeral System	00:07:44 Duration
	Lecture 19	Numeration	00:04:01 Duration
	Lecture 20	International system of numeration	00:18:09 Duration
	Lecture 21	Problem session International system of numeration	00:16:51 Duration
	Lecture 22	Indian system of numeration	00:16:25 Duration
	Lecture 23	Problem session Indian system of numeration	00:19:32 Duration
	Lecture 24	International numeration and Indian numeration	00:05:12 Duration
	Lecture 25	Conversion problems	00:17:13 Duration
	Lecture 26	Difference between International numeration and Indian numeration	00:04:22 Duration

	Lecture 1	Face value and Place value	00:18:21 Duration
	Lecture 2	Difference between 'Face value' and 'Place value'	00:02:32 Duration
	Lecture 3	Problem session 1	00:16:07 Duration
	Lecture 4	Problem session 2	00:11:23 Duration
	Lecture 5	Problem session 3	00:15:08 Duration

	Lecture 1	Expanded form of a number Introduction	00:05:47 Duration
	Lecture 2	Problem session Writing expanded form	00:12:43 Duration
	Lecture 3	Problem session Writing number from expanded form	00:05:43 Duration

	Lecture 1	Comparing 2 numbers Introduction	00:08:40 Duration
	Lecture 2	Comparing 2 numbers Rule 1	00:06:22 Duration
	Lecture 3	Problem session Rule 1	00:20:58 Duration
	Lecture 4	Comparing 2 numbers Rule 2	00:02:44 Duration
	Lecture 5	Problem session Rule 2	00:18:03 Duration
	Lecture 6	Comparing 2 numbers Rule 3	00:08:05 Duration
	Lecture 7	Problem session Rule 3	00:20:39 Duration
	Lecture 8	Comparing 2 numbers Rule 4	00:05:26 Duration
	Lecture 9	Problem session Rule 4	00:14:56 Duration
	Lecture 10	Ascending order (Increasing order)	00:07:37 Duration
	Lecture 11	Descending order (Decreasing order)	00:06:24 Duration
	Lecture 12	Difference Ascending order vs Descending order	00:05:31 Duration
	Lecture 13	Comparing more than 2 numbers Rules	00:07:29 Duration
	Lecture 14	Comparing more than 2 numbers Example 1	00:09:04 Duration
	Lecture 15	Comparing more than 2 numbers Example 2	00:17:04 Duration
	Lecture 16	Comparing more than 2 numbers Example 3	00:11:55 Duration
	Lecture 17	Problem session Ascending order and Descending order	00:25:54 Duration
	Lecture 18	Problem session Finding the smallest number	00:05:22 Duration
	Lecture 19	Problem session Finding the largest number	00:03:26 Duration

	Lecture 1	Formation of Numbers - 1	00:06:02 Duration
	Lecture 2	Formation of Numbers - 2	00:19:05 Duration
	Lecture 3	Formation of Numbers - 3	00:17:18 Duration
	Lecture 4	Formation of Numbers - 4	00:25:05 Duration
	Lecture 5	Problem session - 1	00:17:44 Duration
	Lecture 6	Problem session - 2	00:15:35 Duration
	Lecture 7	Problem session - 3	00:14:04 Duration
	Lecture 8	Problem session - 4	00:06:45 Duration
	Lecture 9	Formation of Numbers - 5	00:14:39 Duration
	Lecture 10	Formation of Numbers - 6	00:09:09 Duration
	Lecture 11	Problem session - 5	00:16:36 Duration
	Lecture 12	Problem session - 6	00:19:37 Duration
	Lecture 13	Problem session - 7	00:14:09 Duration
	Lecture 14	Problem session - 8	00:19:50 Duration
	Lecture 15	Problem session - 9	00:15:06 Duration
	Lecture 16	Problem session - 10	00:10:38 Duration

	Lecture 1	Forming the greatest and the smallest numbers with the given digits	00:20:30 Duration
	Lecture 2	Problem session - 1	00:06:54 Duration
	Lecture 3	Problem session - 2	00:08:58 Duration

	Lecture 1	The smallest and the greatest numbers of n-digits	00:14:37 Duration
	Lecture 2	Problem session - 1	00:05:01 Duration
	Lecture 3	Problem session - 2	00:04:46 Duration
	Lecture 4	Some patterns	00:04:28 Duration

	Lecture 1	Rounding off - Introduction	00:09:48 Duration
	Lecture 2	Rule - Rounding off to nearest tens	00:09:37 Duration
	Lecture 3	Examples - Rounding off to nearest tens	00:11:35 Duration
	Lecture 4	Problem session - Rounding off to nearest tens	00:14:03 Duration
	Lecture 5	Rule - Rounding off to nearest hundreds	00:08:01 Duration
	Lecture 6	Examples - Rounding off to nearest hundreds	00:08:26 Duration
	Lecture 7	Problem session - Rounding off to nearest hundreds	00:16:22 Duration
	Lecture 8	Rule - Rounding off to nearest thousands	00:07:56 Duration
	Lecture 9	Examples - Rounding off to nearest thousands	00:05:55 Duration
	Lecture 10	Problem session - Rounding off to nearest thousands	00:15:16 Duration
	Lecture 11	Problem session - Rounding off	00:19:04 Duration
	Lecture 12	Rounding off to nearest ten-thousands and further	00:08:24 Duration

	Lecture 1	Estimation - Introduction	00:09:27 Duration
	Lecture 2	Understanding estimation - Example	00:08:58 Duration
	Lecture 3	Understanding estimation - Examples	00:09:23 Duration
	Lecture 4	Uderstanding estimation - Examples	00:14:53 Duration
	Lecture 5	Estimation - Theoritical points	00:20:34 Duration
	Lecture 6	Understanding estimation - Example	00:04:34 Duration
	Lecture 7	Understanding estimation - Example	00:03:33 Duration
	Lecture 8	General rule of estimation	00:02:27 Duration
	Lecture 9	Problem session - 1	00:07:35 Duration
	Lecture 10	Problem session - 2	00:02:36 Duration
	Lecture 11	Problem session - 3	00:02:47 Duration
	Lecture 12	'Estimation in lower places' vs 'Estimation in higher places'	00:04:24 Duration

	Lecture 1	What is a 'Product'	00:03:13 Duration
	Lecture 2	What is a 'Factor'	00:08:07 Duration
	Lecture 3	What is a 'Multiple'	00:04:20 Duration
	Lecture 4	Properties of 'Factors'	00:11:49 Duration
	Lecture 5	Properties of 'Multiples'	00:06:11 Duration
	Lecture 6	How to find 'Factors'	00:05:42 Duration
	Lecture 7	Problem session - Finding 'Factors'	00:21:23 Duration
	Lecture 8	How to find 'Multiples'	00:01:15 Duration
	Lecture 9	Problem session - Finding 'Multiples'	00:10:46 Duration
	Lecture 10	What are 'Common factors'	00:09:43 Duration
	Lecture 11	Problem session - Finding 'Common factors'	00:13:48 Duration
	Lecture 12	What are 'Common multiples'	00:04:22 Duration
	Lecture 13	Problem session - Finding 'Common multiples'	00:14:06 Duration
	Lecture 14	Insight on 'Prime numbers' and 'composite numbers'	00:10:33 Duration
	Lecture 15	What are 'Prime numbers'	00:04:28 Duration
	Lecture 16	What are 'Composite numbers'	00:03:57 Duration
	Lecture 17	Which number is 'Neither prime nor composite'	00:00:54 Duration
	Lecture 18	Which number is 'Both prime and composite'	00:00:57 Duration
	Lecture 19	What is 'Sieve of Eratosthenes'	00:15:47 Duration
	Lecture 20	Steps to write 'Sieve of Eratosthenes'	00:05:46 Duration
	Lecture 21	Problem session - Based on 'Sieve of Eratosthenes'	00:13:04 Duration
	Lecture 22	Problem session - Testing primality of a number between 1 and 100	00:10:25 Duration
	Lecture 23	Properties of Prime numbers	00:18:39 Duration
	Lecture 24	Problem session - Properties of Prime numbers	00:06:26 Duration
	Lecture 25	Test of Prime	00:09:17 Duration
	Lecture 26	Problem session - Test of Prime	00:11:42 Duration
	Lecture 27	Problem session - Test of Prime	00:09:19 Duration
	Lecture 28	Proof of 'Primality test for numbers upto 100'	00:02:01 Duration
	Lecture 29	Problem session - Test of Prime	00:01:17 Duration
	Lecture 30	Problem session - Test of Prime	00:01:16 Duration
	Lecture 31	What is 'Factorisation'	00:09:06 Duration
	Lecture 32	What is 'Prime factorisation'	00:06:13 Duration
	Lecture 33	'Factorisation' vs 'Prime factorisation'	00:03:40 Duration
	Lecture 34	Fundamental theorem of Arithmetic	00:03:14 Duration
	Lecture 35	How to find 'Prime factorisation'	00:05:25 Duration
	Lecture 36	Problem session - Finding Prime factorisation	00:19:42 Duration
	Lecture 37	Problem session - Prime factorisation	00:01:19 Duration
	Lecture 38	Problem session - Prime factorisation	00:01:37 Duration
	Lecture 39	Problem session - Prime factorisation	00:02:41 Duration
	Lecture 40	Problem session - Prime factorisation	00:05:37 Duration
	Lecture 41	Problem session - Prime factorisation	00:02:07 Duration
	Lecture 42	Problem session - Prime factorisation	00:01:05 Duration
	Lecture 43	Problem session - Prime factorisation	00:02:19 Duration
	Lecture 44	Importance of 'Prime factors' and 'Prime factorisation'	00:02:06 Duration
	Lecture 45	What is 'HCF'	00:08:03 Duration
	Lecture 46	Different names of HCF	00:02:27 Duration
	Lecture 47	HCF of two numbers - Method 1	00:02:16 Duration
	Lecture 48	HCF of two numbers - Method 2	00:01:47 Duration
	Lecture 49	HCF of two numbers - Method 3	00:01:35 Duration
	Lecture 50	HCF of two numbers - Method 4	00:03:55 Duration
	Lecture 51	HCF of two numbers - Method 5	00:01:30 Duration
	Lecture 52	HCF of two numbers - Method 6	00:01:36 Duration
	Lecture 53	HCF of two numbers - Method 7	00:03:10 Duration
	Lecture 54	HCF of two numbers - Method 8	00:01:56 Duration
	Lecture 55	HCF of two numbers - All 8 methods	00:06:39 Duration
	Lecture 56	HCF of more than two numbers - Method 1	Preview
	Lecture 57	HCF of more than two numbers - Method 2	00:02:14 Duration
	Lecture 58	HCF of more than two numbers - Method 3	00:01:38 Duration
	Lecture 59	HCF of more than two numbers - Method 4	00:02:34 Duration
	Lecture 60	HCF of more than two numbers - Method 5	00:01:26 Duration
	Lecture 61	HCF of more than two numbers - Method 6	00:01:35 Duration
	Lecture 62	HCF of more than two numbers - Method 7	Preview
	Lecture 63	Problem session - Finding HCF	00:23:05 Duration
	Lecture 64	What is 'LCM'	00:11:00 Duration
	Lecture 65	LCM of two numbers - Method 1	00:01:47 Duration
	Lecture 66	LCM of two numbers - Method 2	00:04:04 Duration
	Lecture 67	LCM of two numbers - Method 3	00:04:38 Duration
	Lecture 68	LCM of two numbers - Method 4	00:01:56 Duration
	Lecture 69	LCM of two numbers - Method 5	00:03:08 Duration
	Lecture 70	LCM of two numbers - Method 6	00:01:45 Duration
	Lecture 71	LCM of two numbers - Method 7	00:02:01 Duration
	Lecture 72	LCM of two numbers - All 6 methods	00:06:44 Duration
	Lecture 73	LCM of more than two numbers - Method 1	00:05:49 Duration
	Lecture 74	LCM of more than two numbers - Method 2	00:02:33 Duration
	Lecture 75	LCM of more than two numbers - Method 3	00:02:43 Duration
	Lecture 76	LCM of more than two numbers - Method 4	00:02:50 Duration
	Lecture 77	LCM of more than two numbers - Method 5	00:02:03 Duration
	Lecture 78	LCM of more than two numbers - Method 6	00:01:48 Duration
	Lecture 79	Problem session - Finding LCM	00:22:35 Duration
	Lecture 80	Problem session - HCF vs LCM	00:17:33 Duration
	Lecture 81	What are 'Coprime numbers'	00:03:46 Duration
	Lecture 82	What are 'Twin-primes'	00:01:16 Duration
	Lecture 83	What is a 'Perfect number'	00:02:46 Duration
	Lecture 84	What is a 'Prime-triplet'	00:01:27 Duration
	Lecture 85	What are 'Even numbers' and 'Odd numbers'	00:04:37 Duration
	Lecture 86	Properties of HCF and LCM	00:15:53 Duration
	Lecture 87	Problem session - Properties of HCF and LCM	00:03:21 Duration
	Lecture 88	Relation between HCF, LCM and product of two numbers	00:11:51 Duration
	Lecture 89	Problem session - Relation between HCF, LCM and product of two numbers	00:06:14 Duration
	Lecture 90	HCF word problems - Introduction	00:11:51 Duration
	Lecture 91	Problem session - Word problems on HCF	00:19:05 Duration
	Lecture 92	Problem session - Word problems on HCF	00:16:55 Duration
	Lecture 93	Problem session - Word problems on HCF	00:22:22 Duration
	Lecture 94	LCM word problems - Introduction	00:05:05 Duration
	Lecture 95	Problem session - Word problems on LCM	00:12:51 Duration
	Lecture 96	Problem session - Word problems on LCM	00:12:23 Duration
	Lecture 97	Problem session - Word problems on LCM	00:10:26 Duration
	Lecture 98	Problem session - Problems on HCF and LCM	00:15:54 Duration
	Lecture 99	Problem session - Problems on HCF and LCM	00:15:15 Duration
	Lecture 100	Problem session - Problems on HCF and LCM	00:10:14 Duration
	Lecture 101	Problem session - Word problems on HCF and LCM	00:13:01 Duration
	Lecture 102	Problem session - Word problems on HCF and LCM	00:13:38 Duration
	Lecture 103	Problem session - Word problems on HCF and LCM	00:09:50 Duration

	Lecture 1	First rule of divisibility	00:04:25 Duration
	Lecture 2	Problem session	00:00:51 Duration
	Lecture 3	Second rule of divisibility	00:02:27 Duration
	Lecture 4	Problem session	00:01:14 Duration
	Lecture 5	Third rule of divisibility	00:01:10 Duration
	Lecture 6	Problem session	00:01:05 Duration
	Lecture 7	Problem session	00:05:18 Duration
	Lecture 8	Problem session	00:03:31 Duration
	Lecture 9	Fourth rule of divisibility	00:02:41 Duration

	Lecture 1	What is 'Divisibility test'	00:02:08 Duration
	Lecture 2	Division by 0	00:01:07 Duration
	Lecture 3	Divisibility test of 1	00:00:41 Duration
	Lecture 4	Divisibility test of 2	00:02:36 Duration
	Lecture 5	Problem session - Divisibility test of 2	00:01:21 Duration
	Lecture 6	Proof of 'divisibility test of 2'	00:03:30 Duration
	Lecture 7	Divisibility test of 3	00:03:10 Duration
	Lecture 8	Problem session - Divisibility test of 3	00:03:17 Duration
	Lecture 9	Proof of 'divisibility test of 3'	00:04:52 Duration
	Lecture 10	Divisibility test of 4	00:02:13 Duration
	Lecture 11	Problem session - Divisibility test of 4	00:02:56 Duration
	Lecture 12	Proof of 'divisibility test of 4'	00:03:06 Duration
	Lecture 13	Divisibility test of 5	00:01:17 Duration
	Lecture 14	Problem session - Divisibility test of 5	00:00:55 Duration
	Lecture 15	Proof of 'divisibility test of 5'	00:02:30 Duration
	Lecture 16	Divisibility test of 6	00:02:20 Duration
	Lecture 17	Problem session - Divisibility test of 6	00:03:19 Duration
	Lecture 18	Proof of 'divisibility test of 6'	00:01:07 Duration
	Lecture 19	Divisibility test of 7	00:10:28 Duration
	Lecture 20	Problem session - Divisibility test of 7	00:02:34 Duration
	Lecture 21	Proof of 'divisibility test of 7'	00:09:38 Duration
	Lecture 22	Divisibility test of 8	00:01:16 Duration
	Lecture 23	Problem session - Divisibility test of 8	00:03:22 Duration
	Lecture 24	Proof of 'divisibility test of 8'	00:01:31 Duration
	Lecture 25	Divisibility test of 9	00:02:55 Duration
	Lecture 26	Problem session - Divisibility test of 9	00:02:51 Duration
	Lecture 27	Proof of 'divisibility test of 9'	00:01:41 Duration
	Lecture 28	Divisibility test of 10	00:00:34 Duration
	Lecture 29	Problem session - Divisibility test of 10	00:00:53 Duration
	Lecture 30	Proof of 'divisibility test of 10'	00:02:16 Duration
	Lecture 31	Divisibility test of 11	00:13:21 Duration
	Lecture 32	Problem session - Divisibility test of 11	00:07:49 Duration
	Lecture 33	Proof of 'divisibility test of 11'	00:11:09 Duration
	Lecture 34	Divisibility test of 12	00:02:48 Duration
	Lecture 35	Proof of 'divisibility test of 12'	00:01:11 Duration
	Lecture 36	Divisibility test of 13	00:02:37 Duration
	Lecture 37	Proof of 'divisibility test of 13'	00:04:30 Duration
	Lecture 38	Divisibility test of 14	00:03:01 Duration
	Lecture 39	Proof of 'divisibility test of 14'	00:00:57 Duration
	Lecture 40	Divisibility test of 15	00:02:08 Duration
	Lecture 41	Proof of 'divisibility test of 15'	00:00:59 Duration
	Lecture 42	Coprime factors test	00:04:20 Duration
	Lecture 43	Revision of divisibility tests of natural numbers upto 15	00:05:19 Duration
	Lecture 44	Problem session - Divisibility tests upto 15	00:02:19 Duration

	Lecture 1	Number System - Introduction	00:09:03 Duration
	Lecture 2	Natural numbers	00:20:08 Duration
	Lecture 3	Problem session - Natural numbers	00:07:06 Duration
	Lecture 4	Whole numbers - Part 1	00:24:34 Duration
	Lecture 5	Whole numbers - Part 2	00:10:10 Duration
	Lecture 6	Problem session - Whole numbers	00:06:14 Duration
	Lecture 7	Integers - Part 1	00:22:46 Duration
	Lecture 8	Integers - Part 2	00:24:37 Duration
	Lecture 9	Problem session - Integers	00:02:27 Duration
	Lecture 10	Problem session - Integers	00:04:42 Duration
	Lecture 11	Problem session - Integers on number line	00:03:57 Duration
	Lecture 12	Fractions - Part 1	00:17:56 Duration
	Lecture 13	Fractions - Part 2	00:19:10 Duration
	Lecture 14	Fractions - Part 3	00:16:38 Duration
	Lecture 15	Fractions - Part 4	00:21:34 Duration
	Lecture 16	Fractions - Part 5	00:11:31 Duration
	Lecture 17	Fractions - Part 6	00:16:42 Duration
	Lecture 18	Fractions - Part 7	00:16:02 Duration
	Lecture 19	Fractions - Part 8	00:09:43 Duration
	Lecture 20	Fractions - Part 9	00:21:34 Duration
	Lecture 21	Problem session - Fractions	00:03:08 Duration
	Lecture 22	Problem session - Fractions	00:02:09 Duration
	Lecture 23	Problem session - Fractions (shading)	00:03:25 Duration
	Lecture 24	Problem session - Fractions (shading) 2	00:01:06 Duration
	Lecture 25	Problem session - Fractions (proper, improper, mixed)	00:02:52 Duration
	Lecture 26	Problem session - Fractions (simplest form)	00:04:17 Duration
	Lecture 27	Problem session - Fractions (equivalent fractions)	00:04:46 Duration
	Lecture 28	Problem session - Fractions (like and unlike)	00:03:02 Duration
	Lecture 29	Problem session - Fractions (plotting)	00:06:00 Duration
	Lecture 30	Problem session - Fractions (word problems)	00:04:37 Duration
	Lecture 31	Rational numbers - Part 1	00:15:42 Duration
	Lecture 32	Rational numbers - Part 2	00:12:19 Duration
	Lecture 33	Rational numbers - Part 3	00:03:39 Duration
	Lecture 34	Rational numbers - Part 4	00:07:38 Duration
	Lecture 35	Rational numbers - Part 5	00:02:26 Duration
	Lecture 36	Rational numbers - Part 6	00:02:57 Duration
	Lecture 37	Rational numbers - Part 7	00:04:05 Duration
	Lecture 38	Rational numbers - Part 8	00:02:51 Duration
	Lecture 39	Rational numbers - Part 9	00:01:25 Duration
	Lecture 40	Rational numbers - Part 10	00:19:55 Duration
	Lecture 41	Rational numbers - Part 11	00:25:24 Duration
	Lecture 42	Rational numbers - Part 12	00:10:40 Duration
	Lecture 43	Rational numbers - Part 13	00:09:33 Duration
	Lecture 44	Rational numbers - Part 14	00:05:35 Duration
	Lecture 45	Rational numbers - Part 15	00:03:56 Duration
	Lecture 46	Rational numbers - Part 16	00:01:37 Duration
	Lecture 47	Rational numbers - Part 17	00:26:00 Duration
	Lecture 48	Rational numbers - Part 18	00:10:53 Duration
	Lecture 49	Rational numbers - Part 19	00:09:16 Duration
	Lecture 50	Rational numbers - Part 20	00:17:42 Duration
	Lecture 51	Problem session - Rational numbers	00:03:17 Duration
	Lecture 52	Problem session - Rational numbers 1	00:03:14 Duration
	Lecture 53	Problem session - Rational numbers 2	00:05:38 Duration
	Lecture 54	Problem session - Rational numbers 3	00:03:20 Duration
	Lecture 55	Problem session - Rational numbers 4	00:02:56 Duration
	Lecture 56	Recap of Number systems - Part 1	00:13:34 Duration
	Lecture 57	Recap of Number systems - Part 2	00:10:23 Duration
	Lecture 58	God made Integers, rest are man-made	00:05:13 Duration

	Lecture 1	Comparison and Ordering of Numbers - Introduction	00:01:23 Duration
	Lecture 2	Comparison of Natural numbers - Introduction	00:04:24 Duration
	Lecture 3	Comparison of Natural numbers - Method 1	00:07:51 Duration
	Lecture 4	Comparison of Natural numbers - Method 2	00:06:38 Duration
	Lecture 5	Comparison of Natural numbers - Method 3	00:13:25 Duration
	Lecture 6	Comparison of Natural numbers - All 3 methods	00:04:44 Duration
	Lecture 7	Ordering of Natural numbers	00:03:49 Duration
	Lecture 8	Comparison of Whole numbers - Introduction	00:03:07 Duration
	Lecture 9	Comparison of Whole numbers - Method 1	00:04:40 Duration
	Lecture 10	Comparison of Whole numbers - Method 2	00:03:42 Duration
	Lecture 11	Comparison of Whole numbers - Method 3	00:08:01 Duration
	Lecture 12	Comparison of Whole numbers - All 3 methods	00:03:43 Duration
	Lecture 13	Ordering of Whole numbers	00:03:20 Duration
	Lecture 14	Comparison of Integers - Introduction	00:03:47 Duration
	Lecture 15	Absolute value or modulus of an Integer	00:19:02 Duration
	Lecture 16	Problem session - Plotting Integers	00:02:16 Duration
	Lecture 17	Comparison of Integers - Method 1	00:16:44 Duration
	Lecture 18	Comparison of Integers - Method 2	00:12:28 Duration
	Lecture 19	Comparison of Integers - Method 3	00:11:13 Duration
	Lecture 20	Comparison of Integers - All 3 methods	00:05:55 Duration
	Lecture 21	Ordering of Integers	00:03:52 Duration
	Lecture 22	Problem session - Comparison of integers	00:02:22 Duration
	Lecture 23	Problem session - Comparison of Integers	00:04:34 Duration
	Lecture 24	Comparison of Fractions - Introduction	00:09:33 Duration
	Lecture 25	Comparison of Fractions - Method 1	00:07:56 Duration
	Lecture 26	Comparison of Fractions - Method 2	00:10:51 Duration
	Lecture 27	Comparison of Fractions - Method 3	00:11:05 Duration
	Lecture 28	Comparison of Fractions - Method 4	00:05:05 Duration
	Lecture 29	Comparison of Fractions (Mixed fractions) - Method 5	00:10:16 Duration
	Lecture 30	Comparison of Fractions - Method 6	00:07:24 Duration
	Lecture 31	Comparison of Fractions - Method 7	00:05:51 Duration
	Lecture 32	Comparison of Fractions - Method 8	Preview
	Lecture 33	Comparison of Fractions - All 8 methods	00:10:37 Duration
	Lecture 34	Ordering of Fractions	00:05:43 Duration
	Lecture 35	Problem session - Comparison of fractions	00:04:17 Duration
	Lecture 36	Comparison of Rational numbers - Introduction	00:04:54 Duration
	Lecture 37	Comparison of Rational numbers - Method 1	00:10:39 Duration
	Lecture 38	Comparison of Rational numbers - Method 2	00:16:50 Duration
	Lecture 39	Comparison of Rational numbers - Method 3	00:05:39 Duration
	Lecture 40	Comparison of Rational numbers - All 7 methods	00:12:57 Duration
	Lecture 41	Ordering of Rational numbers	00:04:51 Duration
	Lecture 42	Problem session - Comparison of rational numbers	00:04:42 Duration

	Lecture 1	Fundamental operations on numbers - Introduction	00:05:34 Duration
	Lecture 2	How to add, subtract, multiply and divide two natural numbers	00:11:40 Duration
	Lecture 3	Operations on natural numbers through number line	00:19:58 Duration
	Lecture 4	How to add, subtract, multiply and divide two whole numbers	00:05:37 Duration
	Lecture 5	Operations on Whole numbers through number line	00:11:36 Duration
	Lecture 6	Absolute value of an Integer	00:03:47 Duration
	Lecture 7	How to add two integers	00:19:29 Duration
	Lecture 8	How to add two or more integers	00:27:33 Duration
	Lecture 9	Problem session - Addition of integers	00:07:27 Duration
	Lecture 10	How to multiply two integers	00:14:47 Duration
	Lecture 11	How to multiply two or more integers	00:12:00 Duration
	Lecture 12	Important points in multiplication of integers	00:17:04 Duration
	Lecture 13	Problem session - Multiplication of integers	00:03:25 Duration
	Lecture 14	Problem session - Additive inverse of integers	00:02:47 Duration
	Lecture 15	How to subtract two integers	00:05:42 Duration
	Lecture 16	A useful tip in addition and subtraction of two integers	00:05:22 Duration
	Lecture 17	Easier ways of subtracting integers	00:12:32 Duration
	Lecture 18	How to subtract two or more integers	00:06:21 Duration
	Lecture 19	Problem session - Subtraction of integers	00:06:59 Duration
	Lecture 20	Problem session - Addition and subtraction of integers	00:05:19 Duration
	Lecture 21	Problem session - Successor and predecessor of integers	00:03:19 Duration
	Lecture 22	How to divide two integers	00:13:44 Duration
	Lecture 23	How to divide two or more integers	00:07:22 Duration
	Lecture 24	Problem session - Division of integers	00:03:09 Duration
	Lecture 25	Problem session - Simplification of integers	00:08:36 Duration
	Lecture 26	How to add two fractions	00:18:05 Duration
	Lecture 27	How to add two or more fractions	00:09:47 Duration
	Lecture 28	Problem session - Addition of fractions	00:02:45 Duration
	Lecture 29	How to subtract two fractions	00:11:49 Duration
	Lecture 30	How to subtract two or more fractions	00:03:13 Duration
	Lecture 31	Problem session - Subtraction of fractions	00:04:05 Duration
	Lecture 32	How to multiply two fractions	00:07:04 Duration
	Lecture 33	How to multiply two or more fractions	00:09:26 Duration
	Lecture 34	Problem session - Multiplication of fractions	00:03:25 Duration
	Lecture 35	How to divide two fractions	00:06:40 Duration
	Lecture 36	How to divide two fractions - An important point	00:07:52 Duration
	Lecture 37	How to divide two or more fractions	00:09:57 Duration
	Lecture 38	Problem session - Division of fractions	00:04:07 Duration
	Lecture 39	All operations on two fractions	00:05:31 Duration
	Lecture 40	Problem session - Simplification of fractions	00:06:57 Duration
	Lecture 41	How to add two rational numbers	00:12:02 Duration
	Lecture 42	How to add two or more rational numbers	00:08:50 Duration
	Lecture 43	Problem session - Addition of rational numbers	00:05:15 Duration
	Lecture 44	How to subtract two rational numbers	00:10:48 Duration
	Lecture 45	How to subtract two or more rational numbers	00:07:39 Duration
	Lecture 46	Problem session - Subtraction of rational numbers	00:07:09 Duration
	Lecture 47	How to multiply two rational numbers	00:06:09 Duration
	Lecture 48	How to multiply two or more rational numbers	00:07:11 Duration
	Lecture 49	Problem session - Multiplication of rational numbers	00:02:51 Duration
	Lecture 50	How to divide two rational numbers	00:09:27 Duration
	Lecture 51	How to divide two or more rational numbers	00:08:28 Duration
	Lecture 52	Problem session - Division of rational numbers	00:02:59 Duration
	Lecture 53	All operations on two rational numbers	00:06:47 Duration

	Lecture 1	Closure Property - Introduction	00:11:01 Duration
	Lecture 2	Closure property for Natural numbers	00:15:14 Duration
	Lecture 3	Closure property for Whole numbers	00:10:43 Duration
	Lecture 4	Closure property for Integers	00:10:15 Duration
	Lecture 5	Closure property for Fractions	00:14:37 Duration
	Lecture 6	Closure property for Rational numbers	00:10:55 Duration
	Lecture 7	Summary of Closure property	00:10:25 Duration
	Lecture 8	Commutative Property - Introduction	00:06:31 Duration
	Lecture 9	Commutative property for Natural numbers	00:07:07 Duration
	Lecture 10	Commutative property for Whole numbers	00:06:09 Duration
	Lecture 11	Commutative property for Integers	00:06:29 Duration
	Lecture 12	Commutative property for Fractions	00:09:38 Duration
	Lecture 13	Commutative property for Rational numbers	00:10:24 Duration
	Lecture 14	Summary of Commutative property	00:14:12 Duration
	Lecture 15	Associative Property - Introduction	00:05:41 Duration
	Lecture 16	Associative property for Natural numbers	00:11:26 Duration
	Lecture 17	Associative property for Whole numbers	00:10:01 Duration
	Lecture 18	Associative property for Integers	00:09:28 Duration
	Lecture 19	Associative property for Fractions	00:16:15 Duration
	Lecture 20	Associative property for Rational numbers	00:12:57 Duration
	Lecture 21	Summary of Associative property	00:09:59 Duration
	Lecture 22	Distributive Property - Introduction	00:13:15 Duration
	Lecture 23	Distributive property for Natural numbers	00:05:42 Duration
	Lecture 24	Distributive property for Whole numbers	00:04:09 Duration
	Lecture 25	Distributive property for Integers	00:04:18 Duration
	Lecture 26	Distributive property for Fractions	00:10:40 Duration
	Lecture 27	Distributive property for Rational numbers	00:12:31 Duration
	Lecture 28	Summary of Distributive property	00:14:53 Duration
	Lecture 29	Why do we multiply the way we multiply	00:13:02 Duration
	Lecture 30	Additive Identity and Multiplicative Identity - Introduction	00:06:31 Duration
	Lecture 31	Additive Identity and Multiplicative Identity for Natural numbers	00:04:30 Duration
	Lecture 32	Additive Identity and Multiplicative Identity for Whole number	00:02:43 Duration
	Lecture 33	Additive Identity and Multiplicative Identity for Integers	00:02:44 Duration
	Lecture 34	Additive Identity and Multiplicative Identity for Fractions	00:03:22 Duration
	Lecture 35	Additive Identity and Multiplicative Identity for Rational Numbers	00:03:25 Duration
	Lecture 36	Summary of Additive Identity and Multiplicative Identity	00:02:59 Duration
	Lecture 37	Multiplication and Division by ZERO (0)	00:03:05 Duration

	Lecture 1	Revision of 'Integers'	00:04:42 Duration
	Lecture 2	Integral powers of 10	00:05:02 Duration
	Lecture 3	Understanding numbers	00:08:12 Duration
	Lecture 4	'Place values' and 'Place value table'	00:04:32 Duration
	Lecture 5	'Place value table' and 'Integral powers of 10'	00:03:38 Duration
	Lecture 6	Extension of 'Place value table' towards right of ones place	00:05:56 Duration
	Lecture 7	Expansion of numbers written in place value table	00:03:32 Duration
	Lecture 8	Obtaining a number written in place value table	00:03:06 Duration
	Lecture 9	Introducing the 'Decimal point'	00:05:33 Duration
	Lecture 10	Obtaining a number written in place value table	00:05:48 Duration
	Lecture 11	Problem session - Obaining number and its expansion from table	00:04:53 Duration
	Lecture 12	Problem session - Expansion of decimal numbers	00:05:13 Duration
	Lecture 13	Problem session - Writing decimal numbers in place value table	00:01:58 Duration
	Lecture 14	How to read decimal numbers	00:02:27 Duration
	Lecture 15	Problem session - Decimal numbers in words	00:02:41 Duration
	Lecture 16	What are 'decimal fractions'	00:02:33 Duration
	Lecture 17	How to convert 'decimal fractions' to 'decimal numbers'	00:04:42 Duration
	Lecture 18	Problem session - Expressing decimal fractions as decimal numbers	00:02:31 Duration
	Lecture 19	How to convert 'decimal numbers' to 'decimal fractions'	00:02:49 Duration
	Lecture 20	Problem session - Expressing decimal numbers as decimal fractions	00:02:02 Duration
	Lecture 21	Problem session - Expressing decimal numbers as mixed fractions	00:03:31 Duration
	Lecture 22	Some important points about the 'decimal point'	00:03:29 Duration
	Lecture 23	How to convert 'certain fractions' to 'decimal numbers'	00:03:33 Duration
	Lecture 24	Problem session - Expressing fractions to decimals	00:03:34 Duration
	Lecture 25	Like and Unlike decimals	00:05:33 Duration
	Lecture 26	Problem session - Like and unlike decimals	00:01:50 Duration
	Lecture 27	How to compare two decimal numbers	00:03:22 Duration
	Lecture 28	Problem session - Comparision of decimal numbers	00:06:01 Duration
	Lecture 29	How to add two decimal numbers	00:05:27 Duration
	Lecture 30	Problem session - Adding decimal numbers	00:02:52 Duration
	Lecture 31	How to subtract two decimal numbers	00:02:47 Duration
	Lecture 32	Problem session - Subtracting decimal numbers	00:03:58 Duration
	Lecture 33	How to multiply two decimal numbers	00:03:54 Duration
	Lecture 34	Problem session - Multiplying decimal numbers	00:02:44 Duration
	Lecture 35	How to divide two decimal numbers	00:03:50 Duration
	Lecture 36	Problem session - Dividing decimal numbers	00:08:10 Duration
	Lecture 37	Multiplying and dividing by 'Positive integral powers of 10'	00:05:57 Duration
	Lecture 38	Problem session - Multiplying and dividing by 'Positive integral powers of 10'	00:04:07 Duration
	Lecture 39	How to plot decimal numbers on the number line	00:04:46 Duration
	Lecture 40	Problem session - Plotting the decimal numbers	00:04:12 Duration
	Lecture 41	Types of decimals	00:05:08 Duration
	Lecture 42	Problem session - Types of decimals	00:02:56 Duration
	Lecture 43	What is 'Decimal number system'	00:03:09 Duration
	Lecture 44	Problem session - Miscellaneous problems	00:04:25 Duration
	Lecture 45	Problem session - Miscellaneous problems	00:06:42 Duration
	Lecture 46	Problem session - Revision problems	00:04:13 Duration
	Lecture 47	Problem session - Revision problems	00:03:23 Duration
	Lecture 48	Problem session - Revision problems	00:05:05 Duration
	Lecture 49	Problem session - Revision problems	00:04:13 Duration

	Lecture 1	What is 'Exponentiation'	00:09:53 Duration
	Lecture 2	Problem session - Writing in exponential notation	00:04:15 Duration
	Lecture 3	Problem session - Expanding an exponential notation	00:04:31 Duration
	Lecture 4	What are 'Base' and 'Exponent'	00:04:23 Duration
	Lecture 5	Problem session - Identifying 'Base' and 'Exponent'	00:01:49 Duration
	Lecture 6	How to read an exponential notation	00:06:56 Duration
	Lecture 7	Problem session - Reading an exponential notation	00:06:11 Duration
	Lecture 8	Problem session - Evaluating powers	00:03:02 Duration
	Lecture 9	Problem session - Simplification problems	00:04:08 Duration
	Lecture 10	'Rational base' and 'Integral power' - Part 1	00:05:19 Duration
	Lecture 11	'Rational base' and 'Integral power' - Part 2	00:02:20 Duration
	Lecture 12	'Rational base' and 'POSITIVE Integral power'	00:05:24 Duration
	Lecture 13	'Rational base' and 'NEGATIVE Integral power'	00:16:12 Duration
	Lecture 14	'Rational base' and 'ZERO power'	00:03:40 Duration
	Lecture 15	Complete definition of 'Rational base' raised to'Integral power'	00:02:51 Duration
	Lecture 16	Summary of 'Basics of Exponentiation'	00:12:39 Duration
	Lecture 17	Problem session - Writing in power notation	00:02:40 Duration
	Lecture 18	Problem session - '0' raised to any integral power	00:03:18 Duration
	Lecture 19	Problem session - '1' raised to any integral power	00:01:49 Duration
	Lecture 20	Problem session - '-1' raised to any integral power	00:03:44 Duration
	Lecture 21	Problem session - Any number to the power 0	00:01:07 Duration
	Lecture 22	Problem session - Any number to the power 1	00:01:16 Duration
	Lecture 23	Problem session - Any number to the power -1	00:03:19 Duration
	Lecture 24	Problem session - Simplification problems	00:07:22 Duration

	Lecture 1	'Restrictions' while studying 'Laws of Indices'	00:08:10 Duration
	Lecture 2	First Law - 'Product of powers with same base'	00:10:19 Duration
	Lecture 3	Second Law - 'Quotient of powers with same base'	00:11:19 Duration
	Lecture 4	Third Law - 'Power of a power'	00:12:54 Duration
	Lecture 5	Fourth Law - 'Product of powers with same exponent'	00:11:32 Duration
	Lecture 6	Fifth Law - 'Quotient of powers with same exponent'	00:10:57 Duration
	Lecture 7	Some proofs using the law 'Quotient of powers with same exponent'	00:09:21 Duration

	Lecture 1	Introduction - 'Binary numbers'	00:01:27 Duration
	Lecture 2	What are 'Binary numbers'	00:01:45 Duration
	Lecture 3	What is 'Decimal number system'	00:05:25 Duration
	Lecture 4	What is 'Binary number system'	00:04:27 Duration
	Lecture 5	What are 'Bits'	00:02:23 Duration
	Lecture 6	How to distinguish 'decimal number' and 'binary number'	00:07:39 Duration
	Lecture 7	Problem session - 'Decimal number' vs 'Binary number'	00:01:10 Duration
	Lecture 8	How are 'decimal numbers' formed	00:05:36 Duration
	Lecture 9	How to form 'binary numbers'	00:05:03 Duration
	Lecture 10	Counting in 'binary number system'	00:05:01 Duration
	Lecture 11	Weights of places in binary system	00:03:48 Duration
	Lecture 12	Problem session - On weights of places	00:03:57 Duration
	Lecture 13	How to convert 'binary' to 'decimal'	00:06:41 Duration
	Lecture 14	Problem session - 'Binary' to 'decimal'	00:04:35 Duration
	Lecture 15	How to convert 'decimal' to 'binary'	00:09:38 Duration
	Lecture 16	Problem session - 'Decimal' to 'binary'	00:07:26 Duration
	Lecture 17	Problem session	00:02:38 Duration
	Lecture 18	Some units of computer memory	00:03:42 Duration

	Lecture 1	Who developed 'set theory'	00:01:20 Duration
	Lecture 2	What is a 'set'	00:10:38 Duration
	Lecture 3	Problem session - Identifying sets	00:05:33 Duration
	Lecture 4	Problem session - Identifying sets	00:03:40 Duration
	Lecture 5	What are 'elements' of a set	Preview
	Lecture 6	Notations used in set theory	00:06:36 Duration
	Lecture 7	Two methods to represent a set	00:01:36 Duration
	Lecture 8	'Roster form' of set representation	00:12:38 Duration
	Lecture 9	Problem session - Understanding roster form	00:07:08 Duration
	Lecture 10	Properties of a set	00:06:35 Duration
	Lecture 11	Problem session - Properties of sets	00:02:15 Duration
	Lecture 12	Problem session - Properties of sets -2	00:04:06 Duration
	Lecture 13	'Set-builder form' of set representation	00:10:46 Duration
	Lecture 14	Problem session - Understanding set builder form	00:04:03 Duration
	Lecture 15	Problem session - Understanding set builder form	00:07:25 Duration
	Lecture 16	Problem session - Set builder form to Roster form	00:05:16 Duration
	Lecture 17	Problem session - Roster form to Set-builder form	00:04:03 Duration
	Lecture 18	Problem session - Set builder form and roster form	00:01:54 Duration
	Lecture 19	Problem session - Set builder form and roster form	00:05:44 Duration
	Lecture 20	What is 'cardinality' of a set	00:04:08 Duration
	Lecture 21	Problem session - Finding 'cardinality' of a set	00:06:30 Duration
	Lecture 22	Equal and unequal sets	00:05:12 Duration
	Lecture 23	Problem session - Equal and unequal sets	00:06:59 Duration
	Lecture 24	Two types of sets	00:00:35 Duration
	Lecture 25	What is a 'Finite set'	00:03:18 Duration
	Lecture 26	What is an 'Infinite set'	00:06:55 Duration
	Lecture 27	Problem session - Finite and infinite sets	00:05:19 Duration
	Lecture 28	Two special types of finite sets	00:01:03 Duration
	Lecture 29	What is a 'Null set'	00:03:28 Duration
	Lecture 30	What is a 'Singleton set'	00:02:44 Duration
	Lecture 31	Problem session - Null set and Singleton set	00:05:19 Duration
	Lecture 32	Some standard sets used in Mathematics	00:08:28 Duration
	Lecture 33	What is a 'subset'	00:11:23 Duration
	Lecture 34	Problem session - Subsets	00:03:31 Duration
	Lecture 35	Problem session - Subsets	00:03:14 Duration
	Lecture 36	Problem session - Subsets	00:01:59 Duration
	Lecture 37	Problem session - Subsets	00:02:46 Duration
	Lecture 38	Problem session - Subsets	00:06:11 Duration
	Lecture 39	Problem session - Subsets	00:03:16 Duration

	Lecture 1	Basics of Unitary method	00:11:42 Duration
	Lecture 2	What is Unitary method	00:04:47 Duration
	Lecture 3	Problem session - Applying unitary method (2 directions)	00:10:57 Duration
	Lecture 4	Problem session - Applying unitary method	00:12:09 Duration
	Lecture 5	Faster way of applying unitary method	00:03:37 Duration
	Lecture 6	Problem session - Faster way of unitary method	00:04:53 Duration
	Lecture 7	Role of 'variation' in 'unitary method'	00:12:07 Duration
	Lecture 8	Problem session - Unitary method for inverse variation	00:11:51 Duration

	Lecture 1	Some situations of comparision	00:06:56 Duration
	Lecture 2	Two ways of comparision	00:05:04 Duration
	Lecture 3	Problem session - 2 ways of comparision	00:04:05 Duration
	Lecture 4	Comparision by division	00:09:08 Duration
	Lecture 5	Problem session - Comparision by division	00:03:56 Duration
	Lecture 6	What is a 'Ratio'	00:08:37 Duration
	Lecture 7	Problem session - Ratio as 'comparision by division'	00:01:51 Duration
	Lecture 8	Problem session - Writing as a ratio	00:05:23 Duration
	Lecture 9	An example of ratio	00:05:37 Duration
	Lecture 10	'Terms' of a ratio	00:09:18 Duration
	Lecture 11	Problem session - Writing terms of a ratio	00:02:40 Duration
	Lecture 12	A ratio of 2 terms	00:04:58 Duration
	Lecture 13	Problem session - Antecedent and Consequent	00:02:08 Duration
	Lecture 14	Problem session - Expressing ratio as fraction	00:01:18 Duration
	Lecture 15	What are 'Equivalent ratios'	00:13:37 Duration
	Lecture 16	Problem session - Finding equivalent ratios	00:07:18 Duration
	Lecture 17	'Simplest form' or 'lowest form' of a ratio	00:15:16 Duration
	Lecture 18	Problem session - Expressing in simplest form	00:19:52 Duration
	Lecture 19	Problem session - Expressing in simplest form	00:11:21 Duration
	Lecture 20	Problem session - Expressing in simplest form	00:09:53 Duration
	Lecture 21	Problem session - Finding the simplest form	00:07:24 Duration
	Lecture 22	Problem session - Judgement of equivalent ratios	00:09:08 Duration
	Lecture 23	Problem session - Judgement of equivalent ratios	00:03:35 Duration
	Lecture 24	General method to find equivalent ratios	00:05:17 Duration
	Lecture 25	Problem session - Problems on equivalent ratios	00:11:06 Duration
	Lecture 26	Properties of a ratio	00:13:24 Duration
	Lecture 27	Problem session - Word problems on writing a ratio	00:17:45 Duration
	Lecture 28	Problem session - Word problems on writing a ratio	00:07:29 Duration
	Lecture 29	Problem session - a problem on writing a ratio	00:03:10 Duration
	Lecture 30	How to divide 'a total' in a given 'ratio'	00:09:48 Duration
	Lecture 31	Problem session - Dividing in a ratio	00:26:00 Duration
	Lecture 32	Problem session - Dividing in a ratio	00:11:33 Duration
	Lecture 33	Problem session - Working with ratio	00:09:01 Duration
	Lecture 34	Problem session - Working with ratio	00:14:06 Duration
	Lecture 35	Problem session - Working with ratio	00:05:36 Duration
	Lecture 36	How to compare ratios of two terms	00:03:11 Duration
	Lecture 37	Problem session - Comparing ratios of 2 terms	00:03:19 Duration
	Lecture 38	What is 'proportion'	00:08:52 Duration
	Lecture 39	Problem session - Understanding proportion	00:03:31 Duration
	Lecture 40	'Extreme terms' and 'mean terms' of a proportion	00:03:48 Duration
	Lecture 41	Problem session - Identifying 'mean terms' and 'extreme terms'	00:02:14 Duration
	Lecture 42	Properties of 'extremes ' and 'means'	00:06:27 Duration
	Lecture 43	Problem session - On properties of 'extremes ' and 'means'	00:04:46 Duration
	Lecture 44	Problem session - Quantities in proportion or not	00:05:35 Duration
	Lecture 45	Problem session - Quantities in proportion or not	00:03:19 Duration
	Lecture 46	Problem session - Quantities in proportion or not	00:05:31 Duration
	Lecture 47	Problem session - Quantities in proportion or not	00:03:20 Duration
	Lecture 48	Problem session - Problems on proportion	00:02:35 Duration
	Lecture 49	Problem session - Problems on proportion	00:10:04 Duration
	Lecture 50	Problem session - Problems on proportion	00:04:31 Duration
	Lecture 51	Problem session - A good problem	00:09:47 Duration
	Lecture 52	Problem session - Word problems - Part 1	Preview
	Lecture 53	Problem session - Word problems - Part 2	00:13:29 Duration
	Lecture 54	What is 'continued proportion'	00:04:41 Duration
	Lecture 55	Problem session - On continued proportion	00:04:04 Duration
	Lecture 56	Revision of the chapter - Fill in the blanks	00:06:30 Duration
	Lecture 57	Revision of the chapter - True or False	00:00:53 Duration
	Lecture 58	Revision of the chapter - True or False	00:05:11 Duration
	Lecture 59	Revision of the chapter - MCQs	00:12:03 Duration
	Lecture 60	Revision of the chapter - MCQs	00:05:29 Duration

	Lecture 1	What is 'percentage'	00:04:00 Duration
	Lecture 2	Symbol for 'percent'	00:02:43 Duration
	Lecture 3	Derivation of the word 'percent'	00:01:30 Duration
	Lecture 4	Meaning of '100 percent of something'	00:02:26 Duration
	Lecture 5	Meaning of '50 percent of something'	00:02:42 Duration
	Lecture 6	Meaning of '1 percent of something'	00:08:02 Duration
	Lecture 7	Meaning of 'x percent of something'	00:03:37 Duration
	Lecture 8	The 'base' of a percentage	00:09:58 Duration
	Lecture 9	Problem session - On 'base' of a percentage	00:02:19 Duration
	Lecture 10	Why do we need percentage	00:08:00 Duration
	Lecture 11	Interconnection between fraction, decimal and percentage	00:03:30 Duration
	Lecture 12	Converting 'fractions' and 'decimals' to 'percentages'	00:06:38 Duration
	Lecture 13	Problem session - Converting to percentage	00:07:42 Duration
	Lecture 14	How to convert a 'percentage' to a 'fraction' or a 'decimal'	00:04:45 Duration
	Lecture 15	How to convert a decimal to a percentage	00:04:03 Duration
	Lecture 16	Problem session - Decimal to percentage	00:02:39 Duration
	Lecture 17	How to convert a fraction to a percentage	00:11:06 Duration
	Lecture 18	Problem session - Fraction to percentage	00:18:32 Duration
	Lecture 19	Problem session - Finding percentage of something	00:03:55 Duration
	Lecture 20	Problem session - Simple problems	00:03:32 Duration
	Lecture 21	Problem session - Simple problems	00:02:17 Duration
	Lecture 22	Problem session - Simple problems	00:05:11 Duration
	Lecture 23	Problem session - Problems for competitive exams	00:07:41 Duration
	Lecture 24	Problem session - Problems for competitive exams	00:09:18 Duration
	Lecture 25	Problem session - Word problems - Part 1	00:09:32 Duration
	Lecture 26	Problem session - Word problems - Part 2	00:07:27 Duration
	Lecture 27	Problem session - Word problems - Part 3	00:17:14 Duration
	Lecture 28	Problem session - Word problems - Part 4	00:19:27 Duration
	Lecture 29	What is 'change'	00:11:20 Duration
	Lecture 30	What is 'pecentage change'	00:04:53 Duration
	Lecture 31	A 'percentage change' can be positive, negative or zero	00:07:38 Duration
	Lecture 32	Problem session - Finding percentage change	00:05:05 Duration
	Lecture 33	Understanding 'percentage change'	00:04:39 Duration
	Lecture 34	Problem session - Working out a percentage change	00:07:32 Duration
	Lecture 35	Successive percentage change	00:04:22 Duration
	Lecture 36	Percentage table	00:08:52 Duration
	Lecture 37	Using the percentage table	00:06:04 Duration
	Lecture 38	Applications of percentage table	00:07:50 Duration

	Lecture 1	What is 'purchasing cost'	00:02:07 Duration
	Lecture 2	What are 'overhead expenses'	00:02:25 Duration
	Lecture 3	Problem session - Finding overhead expenses	00:02:28 Duration
	Lecture 4	What is 'cost price'	00:05:37 Duration
	Lecture 5	'Purchasing cost' vs 'cost price'	00:02:37 Duration
	Lecture 6	What is 'selling price'	00:02:04 Duration
	Lecture 7	3 possible cases between C	00:04:29 Duration
	Lecture 8	Introduction to 'profit' and 'loss'	00:03:27 Duration
	Lecture 9	Values of 'profit' and 'loss'	00:04:13 Duration
	Lecture 10	Problem session - Finding profit or loss	00:05:08 Duration
	Lecture 11	What are 'profit percent' and 'loss percent'	00:07:22 Duration
	Lecture 12	Importance of 'profit percent' and 'loss percent'	00:03:57 Duration
	Lecture 13	Problem session - Calculating profit or loss percent	00:07:38 Duration
	Lecture 14	Information hidden in 'profit percent' and 'loss percent'	00:06:40 Duration
	Lecture 15	How to find profit or loss, Given their percentages and C	00:10:16 Duration
	Lecture 16	Problem session - Finding profit or loss from their percentages	00:11:33 Duration
	Lecture 17	How to find S	00:15:21 Duration
	Lecture 18	Problem session - Finding S	00:11:30 Duration
	Lecture 19	How to find C	00:13:12 Duration
	Lecture 20	Problem session - Finding C	00:17:51 Duration
	Lecture 21	How to find profit or loss, Given their percentages and S	00:07:49 Duration
	Lecture 22	Problem session - Finding profit or loss from their percentages	00:08:29 Duration
	Lecture 23	All major concepts revised in 1 video	00:06:14 Duration
	Lecture 24	Problem session - Miscellaneous problems	00:06:56 Duration
	Lecture 25	Problem session - Miscellaneous problems	00:09:53 Duration
	Lecture 26	Problem session - Miscellaneous problems	00:10:09 Duration
	Lecture 27	Problem session - Miscellaneous problems	00:17:50 Duration
	Lecture 28	Revision problems	00:03:16 Duration
	Lecture 29	Revision problems	00:06:43 Duration
	Lecture 30	Revision problems	00:04:49 Duration
	Lecture 31	Revision problems	00:07:38 Duration

	Lecture 1	Interest - Introduction	00:22:11 Duration
	Lecture 2	Problem session - On A = P + I	00:05:46 Duration
	Lecture 3	How to find Interest for 1 year	00:07:05 Duration
	Lecture 4	Problem session - Finding Interest for 1 year	00:21:31 Duration
	Lecture 5	Types of Interest	00:04:45 Duration
	Lecture 6	What is Simple Interest (S	00:07:19 Duration
	Lecture 7	An example on Simple Interest (S	00:06:58 Duration
	Lecture 8	Simple Interest vs Compound Interest	00:13:12 Duration
	Lecture 9	Problem session - On S	00:03:38 Duration
	Lecture 10	Problem session - On S	00:09:15 Duration
	Lecture 11	Problem session - On S	00:03:27 Duration
	Lecture 12	Problem session - On S	00:04:33 Duration
	Lecture 13	How to find S	00:10:44 Duration
	Lecture 14	Problem session - Finding S	00:05:25 Duration
	Lecture 15	How to find S	00:06:20 Duration
	Lecture 16	Problem session - Finding S	00:04:35 Duration
	Lecture 17	How to find S	00:05:39 Duration
	Lecture 18	Problem session - Finding S	00:04:47 Duration
	Lecture 19	Problem session - Finding S	00:03:19 Duration
	Lecture 20	How to find S	00:10:53 Duration
	Lecture 21	The S	00:03:50 Duration
	Lecture 22	Problem session - Using the S	00:03:25 Duration
	Lecture 23	Problem session - Various ways of finding S	00:07:57 Duration
	Lecture 24	The 4 variables in S	00:04:41 Duration
	Lecture 25	Problem session - The same problem asked in 4 different ways	00:10:43 Duration
	Lecture 26	Problem session - Extra problems	00:25:21 Duration

	Lecture 1	What is 'object in motion'	00:03:10 Duration
	Lecture 2	What is 'path length' or 'distance'	00:10:58 Duration
	Lecture 3	What is 'Average speed'	00:10:59 Duration
	Lecture 4	Interconversion of units of speed	00:12:05 Duration
	Lecture 5	Problem session - Interconversion of units of speed	00:05:56 Duration
	Lecture 6	Problem session - Calculating average speed	00:06:12 Duration
	Lecture 7	Problem session - Calculating distance travelled	00:07:16 Duration
	Lecture 8	Problem session - Calculating time taken	00:04:01 Duration
	Lecture 9	Meaning of 'Average speed'	00:04:13 Duration
	Lecture 10	Fastness or slowness of motion	00:07:46 Duration
	Lecture 11	Properties of average speed	00:10:31 Duration
	Lecture 12	'Average speed' and 'Interval of time'	00:06:04 Duration
	Lecture 13	How to solve problems of this chapter	00:10:36 Duration
	Lecture 14	Problem session - Miscellaneous problems - part 1	00:06:11 Duration
	Lecture 15	Problem session - Miscellaneous problems - part 2	00:08:11 Duration
	Lecture 16	Problem session - Miscellaneous problems - part 3	00:07:16 Duration
	Lecture 17	Problem session - Miscellaneous problems - part 4	00:21:01 Duration
	Lecture 18	Problem session - Miscellaneous problems - part 5	00:24:22 Duration
	Lecture 19	Problem session - Miscellaneous problems - part 6	00:07:05 Duration
	Lecture 20	Two types of speed	00:03:45 Duration
	Lecture 21	What is 'uniform motion'	00:01:31 Duration