https://www.khanacademy.org/math/class-6-ncf/x04ca845a9a148c80:number-play/x04ca845a9a148c80:supercells/v/logic-with-numbers 2025-12-05T09:40:41.786169848Z Logic with Numbers We know that numbers are used for counting but in this video, we will try to use numbers in contexts other than counting. Khan Academy video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Logic with Numbers We know that numbers are used for counting but in this video, we will try to use numbers in contexts other than counting. https://cdn.kastatic.org/ka-youtube-converted/HKMgCh1Lnvg.mp4/HKMgCh1Lnvg.mp4 243 Number Play https://www.khanacademy.org/math/class-6-ncf/x04ca845a9a148c80:number-play/x04ca845a9a148c80:supercells/v/comparing-multi-digit-numbers-indian-accent 2025-06-20T11:07:22.158799367Z Comparing multi-digit numbers Compare multi-digit numbers such as 350,000 and 53,000 Kalakrit (Dubbing) video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Comparing multi-digit numbers Compare multi-digit numbers such as 350,000 and 53,000 https://cdn.kastatic.org/ka-youtube-converted/TvjMib0KrS8.mp4/TvjMib0KrS8.mp4 358 Number Play https://www.khanacademy.org/math/class-6-ncf/x04ca845a9a148c80:number-play/x04ca845a9a148c80:supercells/v/supercells 2025-12-05T09:40:41.786169848Z Supercells In this video, we will try to identify supercells in a given table of cells. Khan Academy video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Supercells In this video, we will try to identify supercells in a given table of cells. https://cdn.kastatic.org/ka-youtube-converted/lXx4pnmSz_c.mp4/lXx4pnmSz_c.mp4 304 Number Play https://www.khanacademy.org/math/revision-mh-math-class-6/x01cb2212e31ce997:week-3/x01cb2212e31ce997:quadrilaterals/v/algorithm-for-kaprekar-magic-number 2025-06-08T17:08:59.076161332Z Algorithm for Kaprekar Magic number Curious about the magic behind the Kaprekar Constant? In this video we dive deep into the fascinating world of 6174 and its algorithm! In this step-by-step guide, we’ll explain the Kaprekar Constant, walk you through its algorithm, solve an example, and highlight exceptions to the rule. Here’s what you’ll learn: What is the Kaprekar Constant? Discover the intriguing number 6174 and its significance. Kaprekar's Algorithm: Follow our clear, easy-to-understand explanation of how the algorithm works.Watch as we solve an example to demonstrate the magic in action Mahak Wasan video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Algorithm for Kaprekar Magic number Curious about the magic behind the Kaprekar Constant? In this video we dive deep into the fascinating world of 6174 and its algorithm! In this step-by-step guide, we’ll explain the Kaprekar Constant, walk you through its algorithm, solve an example, and highlight exceptions to the rule. Here’s what you’ll learn: What is the Kaprekar Constant? Discover the intriguing number 6174 and its significance. Kaprekar's Algorithm: Follow our clear, easy-to-understand explanation of how the algorithm works.Watch as we solve an example to demonstrate the magic in action https://cdn.kastatic.org/ka-youtube-converted/1yU4biUdnis.mp4/1yU4biUdnis.mp4 306 Number Play https://www.khanacademy.org/math/class-6-ncf/x04ca845a9a148c80:number-play/x04ca845a9a148c80:supercells/e/n-comparing-numbers 2026-08-05T07:00:41.104753841Z Comparing numbers . Aakash Bagga exercise https://www.khanacademy.org/math/class-6-ncf/x04ca845a9a148c80:number-play/x04ca845a9a148c80:playing-with-numbers/v/digit-sum-of-numbers 2026-01-14T03:17:21.82359354Z Digit Sum of Numbers In this video, we discussed digit sum of numbers and how we can solve problems based on it. Khan Academy video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Digit Sum of Numbers In this video, we discussed digit sum of numbers and how we can solve problems based on it. https://cdn.kastatic.org/ka-youtube-converted/g-PZ6qHit5M.mp4/g-PZ6qHit5M.mp4 287 Number Play https://www.khanacademy.org/math/class-6-ncf/x04ca845a9a148c80:number-play/x04ca845a9a148c80:playing-with-numbers/v/playing-with-digits 2025-12-05T09:40:41.786169848Z Playing with Digits Do you know how many times the digit 1 appears while writing all the natural numbers 1 to 100? Watch this video to find that out. Khan Academy video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Playing with Digits Do you know how many times the digit 1 appears while writing all the natural numbers 1 to 100? Watch this video to find that out. https://cdn.kastatic.org/ka-youtube-converted/bzAJgDYw5Ns.mp4/bzAJgDYw5Ns.mp4 283 Number Play https://www.khanacademy.org/math/class-6-ncf/x04ca845a9a148c80:number-play/x04ca845a9a148c80:playing-with-numbers/v/multiplication-with-arrays-indian-accent 2025-06-08T17:08:59.076161332Z Multiplication with arrays Let's explore this video about representing 12 with multiplication. It shows 12 as 4x3, 3x4, 2x6, 6x2, 1x12, and 12x1. This helps students understand multiplication and different group arrangements. Skyloom (Dubbing) video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Multiplication with arrays Let's explore this video about representing 12 with multiplication. It shows 12 as 4x3, 3x4, 2x6, 6x2, 1x12, and 12x1. This helps students understand multiplication and different group arrangements. https://cdn.kastatic.org/ka-youtube-converted/hBKgtmnc0H8.mp4/hBKgtmnc0H8.mp4 175 Number Play https://www.khanacademy.org/math/cc-third-grade-math/intro-to-multiplication/imp-multiplication-intro/e/equal-groups 2026-08-05T07:00:41.104753841Z Equal groups Practice counting equal groups and making connections to multiplication. Kami exercise https://www.khanacademy.org/math/cc-third-grade-math/intro-to-multiplication/multiplication-with-arrays/e/understand-multiplication-with-arrays 2026-08-05T07:00:41.104753841Z Understand multiplication with arrays Kami exercise https://www.khanacademy.org/math/class-6-ncf/x04ca845a9a148c80:number-play/x04ca845a9a148c80:playing-with-numbers/v/palindromic-numbers 2025-12-05T09:40:41.786169848Z Palindromic Numbers In this video, we will be discussing palindromic numbers or palindromes. Watch this video entirely to discover a very interesting property about palindromic numbers, which has kept Mathematicians busy for a very long time. Khan Academy video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Palindromic Numbers In this video, we will be discussing palindromic numbers or palindromes. Watch this video entirely to discover a very interesting property about palindromic numbers, which has kept Mathematicians busy for a very long time. https://cdn.kastatic.org/ka-youtube-converted/RbwRYX_ozxg.mp4/RbwRYX_ozxg.mp4 312 Number Play https://www.khanacademy.org/math/class-6-ncf/x04ca845a9a148c80:number-play/x04ca845a9a148c80:playing-with-numbers/v/playing-with-number-patterns 2026-01-14T03:17:21.82359354Z Playing with Number Patterns In this video, we solved some problems based on number patterns. Khan Academy video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Playing with Number Patterns In this video, we solved some problems based on number patterns. https://cdn.kastatic.org/ka-youtube-converted/IoIqn8N0NvA.mp4/IoIqn8N0NvA.mp4 267 Number Play https://www.khanacademy.org/math/class-6-ncf/x04ca845a9a148c80:number-play/x04ca845a9a148c80:playing-with-numbers/v/collatz-cojecture-rules 2025-06-08T17:08:59.076161332Z Collatz cojecture rules In this video, we delve into one of the most intriguing puzzles in mathematics - the Collatz Conjecture. Often referred to as the ""3x + 1 problem,"" this conjecture is simple to understand but remains an unsolved mystery to this day. What You'll Learn: Introduction to the Collatz Conjecture Step-by-Step Explanation and Examples Illustrating the Collatz Sequence The Unsolved Mystery: Despite its apparent simplicity, the Collatz Conjecture remains one of the great unsolved problems in mathematics. Mahak Wasan video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Collatz cojecture rules In this video, we delve into one of the most intriguing puzzles in mathematics - the Collatz Conjecture. Often referred to as the ""3x + 1 problem,"" this conjecture is simple to understand but remains an unsolved mystery to this day. What You'll Learn: Introduction to the Collatz Conjecture Step-by-Step Explanation and Examples Illustrating the Collatz Sequence The Unsolved Mystery: Despite its apparent simplicity, the Collatz Conjecture remains one of the great unsolved problems in mathematics. https://cdn.kastatic.org/ka-youtube-converted/bFhmauhMMFg.mp4/bFhmauhMMFg.mp4 186 Number Play https://www.khanacademy.org/math/class-6-ncf/x04ca845a9a148c80:number-play/x04ca845a9a148c80:playing-with-numbers/v/proofs-in-mathematics 2026-01-14T03:17:21.82359354Z Proofs in Mathematics In this video, we discussed the importance of proofs in Mathematics. Khan Academy video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Proofs in Mathematics In this video, we discussed the importance of proofs in Mathematics. https://cdn.kastatic.org/ka-youtube-converted/4mYx5qdp7pc.mp4/4mYx5qdp7pc.mp4 496 Number Play https://www.khanacademy.org/math/class-6-ncf/x04ca845a9a148c80:number-play/x04ca845a9a148c80:simple-estimation/v/estimations 2025-12-05T09:40:41.786169848Z Estimations In this video, we will be discussing various scenarios where estimation is preferred over accuracy. Khan Academy video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Estimations In this video, we will be discussing various scenarios where estimation is preferred over accuracy. https://cdn.kastatic.org/ka-youtube-converted/ptZYGLhAcEs.mp4/ptZYGLhAcEs.mp4 275 Number Play https://www.khanacademy.org/math/class-6-ncf/x04ca845a9a148c80:number-play/x04ca845a9a148c80:simple-estimation/v/estimating-multi-digit-sums-indian-accent 2025-06-08T17:08:59.076161332Z Estimating multi-digit sums Use estimation to add multi-digit numbers. Skyloom (Dubbing) video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Estimating multi-digit sums Use estimation to add multi-digit numbers. https://cdn.kastatic.org/ka-youtube-converted/pVmxMKqvPao.mp4/pVmxMKqvPao.mp4 175 Number Play https://www.khanacademy.org/math/class-6-ncf/x04ca845a9a148c80:number-play/x04ca845a9a148c80:simple-estimation/v/estimating-when-adding-multi-digit-numbers-indian-accent 2025-06-08T17:08:59.076161332Z Estimating when adding multi-digit numbers Let's learn about estimating when adding multi-digit numbers. We see how to round numbers to the nearest 10 and then add them together to get an approximate sum. This technique is helpful for us when we need to make quick mental calculations and don't require an exact answer. Skyloom (Dubbing) video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Estimating when adding multi-digit numbers Let's learn about estimating when adding multi-digit numbers. We see how to round numbers to the nearest 10 and then add them together to get an approximate sum. This technique is helpful for us when we need to make quick mental calculations and don't require an exact answer. https://cdn.kastatic.org/ka-youtube-converted/1hSKxOcAWuw.mp4/1hSKxOcAWuw.mp4 215 Number Play https://www.khanacademy.org/math/class-6-ncf/x04ca845a9a148c80:number-play/x04ca845a9a148c80:simple-estimation/v/multiplication-estimation-example-indian-accent 2025-06-08T17:08:59.076161332Z Multiplication estimation example Estimating the product of two, 2-digit numbers Skyloom (Dubbing) video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Multiplication estimation example Estimating the product of two, 2-digit numbers https://cdn.kastatic.org/ka-youtube-converted/MUFz-nha5T4.mp4/MUFz-nha5T4.mp4 106 Number Play https://www.khanacademy.org/math/cc-third-grade-math/imp-addition-and-subtraction/estimate-to-add-multi-digit-numbers/e/estimate-to-add-multi-digit-whole-numbers- 2026-08-05T07:00:41.104753841Z Estimate to add multi-digit whole numbers Use estimation to find a reasonable solution to multi-digit addition problems. Numbers are less than or equal to 1000. Lindsay exercise https://www.khanacademy.org/math/class-6-ncf/x04ca845a9a148c80:number-play/x04ca845a9a148c80:simple-estimation/e/estimate-to-add-multi-digit-numbers 2026-08-05T07:00:41.104753841Z Estimate to add multi-digit numbers Practice adding multi-digit numbers with sums within one million using estimation. Kami Soltesz exercise https://www.khanacademy.org/math/cc-fifth-grade-math/multi-digit-multiplication-and-division/multi-digit-multiplication-estimation/e/estimate-multi-digit-multiplication-problems 2026-08-05T07:00:41.104753841Z Estimate multi-digit multiplication Use estimation to find a reasonable solution to multi-digit multiplication problems. Lindsay exercise https://www.khanacademy.org/math/class-6-ncf/x04ca845a9a148c80:number-play/x04ca845a9a148c80:simple-estimation/v/game-strategies 2025-12-05T09:40:41.786169848Z Game Strategies In this video, we will try to develop game winning strategies using Mathematics. Khan Academy video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Game Strategies In this video, we will try to develop game winning strategies using Mathematics. https://cdn.kastatic.org/ka-youtube-converted/O3kgS1uCWkA.mp4/O3kgS1uCWkA.mp4 504 Number Play