https://www.khanacademy.org/math/class-7-bridge-course-mh/x0c1f424ff210aa1c:ratio-and-proportion/x0c1f424ff210aa1c:ratio/v/intro-to-ratios-indian-accent 2025-05-30T05:30:36.604331212Z Intro to ratios The video explains ratios, which show the relationship between two quantities. Using apples and oranges as an example, it demonstrates how to calculate and reduce ratios (6:9 to 2:3) and how to reverse the ratio (9:6 to 3:2). Kalakrit (Dubbing) video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Intro to ratios The video explains ratios, which show the relationship between two quantities. Using apples and oranges as an example, it demonstrates how to calculate and reduce ratios (6:9 to 2:3) and how to reverse the ratio (9:6 to 3:2). https://cdn.kastatic.org/ka-youtube-converted/BiNdWEhZ9FI.mp4/BiNdWEhZ9FI.mp4 238 Comparing quantities using proportion https://www.khanacademy.org/math/ka-math-class-7/x26f4f4b84655c15c:comparing-quantities-ncert-new/x26f4f4b84655c15c:meaning-of-percentage/v/finding-percentage-when-total-is-not-100 2024-06-27T19:58:49.99552416Z Finding percentage when total is not 100 In this video we solve problems on finding percentage of quantity when total is not 100. Devashish Phadnis video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Finding percentage when total is not 100 In this video we solve problems on finding percentage of quantity when total is not 100. https://cdn.kastatic.org/ka-youtube-converted/1h2GgBN-yFM.mp4/1h2GgBN-yFM.mp4 182 Comparing quantities using proportion https://www.khanacademy.org/math/cc-seventh-grade-math/cc-7th-fractions-decimals/cc-7th-percent-word-problems/v/another-percent-word-problem 2021-06-30T17:51:15Z Percent word problem: guavas We're putting a little algebra to work to find the full price when you know the discount price in this percent word problem. Sal Khan video https://cdn.kastatic.org/googleusercontent/WfAlLVWehtLAu7eFJlK2hVVVdVBDLENCs3QoebYVKRctwPqqUbcDcxhUQ1kTDlyzxVgp9FZA2bfXJj7CHEzaZiA Percent word problem: guavas We're putting a little algebra to work to find the full price when you know the discount price in this percent word problem. https://cdn.kastatic.org/ka-youtube-converted/d1oNF88SAgg.mp4/d1oNF88SAgg.mp4 378 Comparing quantities using proportion https://www.khanacademy.org/math/class-7-bridge-course-mh/x0c1f424ff210aa1c:profit-loss-and-simple-interest/x0c1f424ff210aa1c:profit-or-loss/v/finding-profit-percent-comparing-quantities-class-7-india-math-khan-academy 2021-07-02T09:35:34Z Finding profit percent Let's find profit percentage using a couple of examples that have simple numbers. Aanand Srinivas video https://cdn.kastatic.org/googleusercontent/o42hCvGy6yEdw1jP12PJXvv2d0H4Bc6Gj9qL6zp7GARoefTb2UMmfFVj1nntUBzFoosRBcV0NFH4yMHBqz6jblMU Finding profit percent Let's find profit percentage using a couple of examples that have simple numbers. https://cdn.kastatic.org/ka-youtube-converted/74XuR3vPvME.mp4/74XuR3vPvME.mp4 503 Comparing quantities using proportion https://www.khanacademy.org/math/7th-grade-math-eureka-squared-aligned/x314834f71a55c568:percent-and-applications-of-percent/x314834f71a55c568:markups-and-discounts/v/combining-discounts 2024-08-05T14:30:06.931055455Z Combining discounts Let's calculate prices with multiple discounts applied to each. We'll explore how the order of the discounts affects the final price. Sal Khan video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Combining discounts Let's calculate prices with multiple discounts applied to each. We'll explore how the order of the discounts affects the final price. https://cdn.kastatic.org/ka-youtube-converted/wR-qdDkOzC8.mp4/wR-qdDkOzC8.mp4 270 Comparing quantities using proportion https://www.khanacademy.org/math/strengthened-shs-general-math/x24dc5a0902f75de5:first-quarter/x24dc5a0902f75de5:percentages-in-various-contexts/v/sales-tax-gst-and-vat 2025-04-15T10:31:19.893778717Z Sales tax, GST and VAT In this video, we simplify tax concepts. We start by introducing tax as a source of government income using a restaurant bill as our example. Next, we explore sales tax with a practical example of a smartphone purchase, solving a question step by step. Then, we break down VAT by showing how it works from a manufacturer’s perspective to a retailer, and finally, we explain GST with a similar real-life scenario. This clear, NCERT–based explanation makes it easier for students to understand how different taxes work in everyday life. Whether you’re a student looking to grasp these concepts or a teacher searching for classroom resources, this video is your go-to guide for mastering tax basics in 8th grade. Created by Sarath Penumuru Devashish Phadnis video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Sales tax, GST and VAT In this video, we simplify tax concepts. We start by introducing tax as a source of government income using a restaurant bill as our example. Next, we explore sales tax with a practical example of a smartphone purchase, solving a question step by step. Then, we break down VAT by showing how it works from a manufacturer’s perspective to a retailer, and finally, we explain GST with a similar real-life scenario. This clear, NCERT–based explanation makes it easier for students to understand how different taxes work in everyday life. Whether you’re a student looking to grasp these concepts or a teacher searching for classroom resources, this video is your go-to guide for mastering tax basics in 8th grade. Created by Sarath Penumuru https://cdn.kastatic.org/ka-youtube-converted/XBOBK28bKGY.mp4/XBOBK28bKGY.mp4 379 Comparing quantities using proportion https://www.khanacademy.org/math/algebra-2-fl-best/x727ff003d4fc3b92:exponential-functions/x727ff003d4fc3b92:compound-interest/v/solving-compound-interest-problems-class-8-india-math-khan-academy 2020-10-07T19:09:51Z Solved example: compound interest In a previous video, we learned that compound interest is just a special case of percentage increase. Here, let's learn how to solve problems involving compound interest by solving an example question. Aanand Srinivas video https://cdn.kastatic.org/googleusercontent/PILoLg_Q9lPrDIU8UL-1xolOvzKoRiJklsaCiMn0Ru588A98Qd3pwdEVDi6X1uBRp9XTCXUXtkVz_13dvflrvjha Solved example: compound interest In a previous video, we learned that compound interest is just a special case of percentage increase. Here, let's learn how to solve problems involving compound interest by solving an example question. https://cdn.kastatic.org/ka-youtube-converted/cf-Pab4YR40.mp4/cf-Pab4YR40.mp4 889 Comparing quantities using proportion https://www.khanacademy.org/math/revision-tg-math-class-8/x9ce0e841a99d4a8a:week-1/x9ce0e841a99d4a8a:comparing-quantities-using-proportion/v/interest-compounded-half-yearly 2025-10-27T11:00:46.958143659Z Interest compounded Half yearly Want to make your money grow faster? This video breaks down the power of semi-annual compounding! Discover why an investment can yield higher returns just by changing how often the interest is calculated. We start with a simple scenario comparing two banks to show how semi-annual compounding gives you an edge over standard annual compounding.Learn the core concepts, including what a ""conversion period"" is and how it impacts your earnings. We'll show you exactly how the standard compound interest formula is modified for semi-annual calculations. Follow along with clear, step-by-step examples for both 1-year and 2-year investments, and see a direct comparison of the final amounts. This is a key financial concept that helps you understand how your savings can work harder for you! Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now! https://www.khanacademy.org/math/class-8-tg/xc1c312da8d7d0ce2:comparing-quantities-using-proportion/xc1c312da8d7d0ce2:compound-interest-and-application/v/intro-to-compound-interest-class-8-india-math-khan-academy 0:00 - Introduction: Why do two identical investments yield different returns? 0:52 - What is Semi-Annual Compounding? 1:34 - Understanding the """"Conversion Period"""" 2:59 - How the Compound Interest Formula Changes for Semi-Annual Compounding 3:57 - Example 1: Calculating for a 1-Year Investment 5:08 - Example 2: Calculating for a 2-Year Investment 6:18 - Comparing Annual vs. Semi-Annual Compounding Results 7:03 - Bonus Question & Practice Problem Khan Academy India is a nonprofit organization with the mission of providing a free, world-class education for anyone, anywhere. We have videos and exercises that have been translated into multiple Indian languages, and 15 million people around the globe learn on Khan Academy every month. Support Us: https://india.khanacademy.org/donate Created by Khan Academy Khan Academy video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Interest compounded Half yearly Want to make your money grow faster? This video breaks down the power of semi-annual compounding! Discover why an investment can yield higher returns just by changing how often the interest is calculated. We start with a simple scenario comparing two banks to show how semi-annual compounding gives you an edge over standard annual compounding.Learn the core concepts, including what a ""conversion period"" is and how it impacts your earnings. We'll show you exactly how the standard compound interest formula is modified for semi-annual calculations. Follow along with clear, step-by-step examples for both 1-year and 2-year investments, and see a direct comparison of the final amounts. This is a key financial concept that helps you understand how your savings can work harder for you! Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now! https://www.khanacademy.org/math/class-8-tg/xc1c312da8d7d0ce2:comparing-quantities-using-proportion/xc1c312da8d7d0ce2:compound-interest-and-application/v/intro-to-compound-interest-class-8-india-math-khan-academy 0:00 - Introduction: Why do two identical investments yield different returns? 0:52 - What is Semi-Annual Compounding? 1:34 - Understanding the """"Conversion Period"""" 2:59 - How the Compound Interest Formula Changes for Semi-Annual Compounding 3:57 - Example 1: Calculating for a 1-Year Investment 5:08 - Example 2: Calculating for a 2-Year Investment 6:18 - Comparing Annual vs. Semi-Annual Compounding Results 7:03 - Bonus Question & Practice Problem Khan Academy India is a nonprofit organization with the mission of providing a free, world-class education for anyone, anywhere. We have videos and exercises that have been translated into multiple Indian languages, and 15 million people around the globe learn on Khan Academy every month. Support Us: https://india.khanacademy.org/donate Created by Khan Academy https://cdn.kastatic.org/ka-youtube-converted/CjJLhTR2iv8.mp4/CjJLhTR2iv8.mp4 439 Comparing quantities using proportion https://www.khanacademy.org/math/revision-tg-math-class-8/x9ce0e841a99d4a8a:week-1/x9ce0e841a99d4a8a:comparing-quantities-using-proportion/e/revision-comparing-quantities-using-proportion-tg-class-8 2026-02-18T21:20:35.275198076Z Revision comparing quantities using proportion TG class 8 . Khan Academy exercise