https://www.khanacademy.org/math/revision-term-1-od-math-class-6/x1cc286456b8e4e1b:week-3/x1cc286456b8e4e1b:business-maths/v/introduction-to-ratios-new-hd-version 2025-02-26T12:18:43.931206682Z Introduction to ratios What a ratio is. Simple ratio problems. Sal Khan video https://cdn.kastatic.org/googleusercontent/vySOnFDVWfzFmXR7t-UEj7Wn7afFyw61ZVKR7IFLSDL4O7WOQf9JumhtPYGkDRBGiJd7zcKvP5bxnsvsp1wIPJE Introduction to ratios What a ratio is. Simple ratio problems. https://cdn.kastatic.org/ka-youtube-converted/HpdMJaKaXXc.mp4/HpdMJaKaXXc.mp4 853 Business Maths https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-ratios-prop-topic/intro-to-ratios/v/ratios-intro 2023-04-15T06:13:13.904395317Z 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). Sal Khan video https://cdn.kastatic.org/googleusercontent/02ESeyYo1O9_iFAh3IJF37ggmth8AayFoTCUMrxFFJnfkx3T4yfqI4Zx_525TZzODXa3qUyqrMTf_Y76XiUXnuDX 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/bIKmw0aTmYc.mp4/bIKmw0aTmYc.mp4 238 Business Maths https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-ratios-prop-topic/intro-to-ratios/v/ratios-as-fractions 2023-04-15T06:13:13.904395317Z Part:whole ratios In this video, we explore ratios using apples and oranges. We find the simplified ratio of apples to total fruit (2:5) and learn to represent ratios as fractions (2/5). The fraction indicates that 2/5 of the fruit are apples. Key definitions include ratio, simplified ratio, and fraction notation. Sal Khan video https://cdn.kastatic.org/googleusercontent/fex_7tQTfySFxsrZ_tmCxBqr1TBNuHLLygXLKnUzSx9RaVUFRTH7372_CbjzDP0_mix7TZKXuQybkWkJif1XLuftSA Part:whole ratios In this video, we explore ratios using apples and oranges. We find the simplified ratio of apples to total fruit (2:5) and learn to represent ratios as fractions (2/5). The fraction indicates that 2/5 of the fruit are apples. Key definitions include ratio, simplified ratio, and fraction notation. https://cdn.kastatic.org/ka-youtube-converted/UK-_qEDtvYo.mp4/UK-_qEDtvYo.mp4 202 Business Maths https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-ratios-prop-topic/intro-to-ratios/e/representing-ratios 2025-09-23T00:00:51.119191096Z Basic ratios Represent the ratio between two quantities with numbers and with words. Per Stinchcombe exercise https://www.khanacademy.org/math/revision-term-1-od-math-class-6/x1cc286456b8e4e1b:week-3/x1cc286456b8e4e1b:business-maths/e/commercial-math-12-a-e 2026-04-07T23:36:17.218592739Z Finding ratios Commercial math 12(a) ashish exercise https://www.khanacademy.org/math/cc-sixth-grade-math/x0267d782:cc-6th-rates-and-percentages/x0267d782:equivalent-representations-of-percent-problems/v/fraction-decimal-and-percent-from-visual-model 2023-05-08T07:03:29.632031759Z Fraction, decimal, and percent from visual model Learn how to convert shaded parts of a square into fractions, decimals, and percentages with ease. Master the skill of representing parts of a whole in different formats, such as simplifying fractions, converting decimals to percentages, and understanding the relationship between them. Boost your math skills and gain confidence in solving real-world problems. video https://cdn.kastatic.org/googleusercontent/V1O2Lrbnylbzcb9VcogqpSjcbC9smmv0sBF-bFqs0WEa9cWAPguypbHfpPmSDKoVGoWAFHAV3YSltd0f1pSaXgem Fraction, decimal, and percent from visual model Learn how to convert shaded parts of a square into fractions, decimals, and percentages with ease. Master the skill of representing parts of a whole in different formats, such as simplifying fractions, converting decimals to percentages, and understanding the relationship between them. Boost your math skills and gain confidence in solving real-world problems. https://cdn.kastatic.org/ka-youtube-converted/wwg052FC_Zw.mp4/wwg052FC_Zw.mp4 213 Business Maths https://www.khanacademy.org/math/algebra-basics/basic-alg-foundations/alg-basics-decimals/e/relate-fractions--decimals--and-percents 2026-04-07T23:36:17.218592739Z Relate fractions, decimals, and percents Use fraction models and hundredths grids to identify equivalent fractions, decimals, and percents. Lindsay exercise https://www.khanacademy.org/math/cc-sixth-grade-math/x0267d782:cc-6th-rates-and-percentages/x0267d782:equivalent-representations-of-percent-problems/v/representing-a-number-as-a-decimal-percent-and-fraction 2023-05-08T07:03:29.632031759Z Converting percents to decimals & fractions example Converting percentages to decimals and fractions is a fundamental math skill. To convert 18% into a decimal, simply divide by 100, resulting in 0.18. To express it as a simplified fraction, find the greatest common factor, which in this case is 2, and divide both the numerator and denominator by it, giving us 9/50. Sal Khan video https://cdn.kastatic.org/googleusercontent/AkQV7mvLA_tlCV3GvaghTXDleY0Yt_JVIbtNOp9xtY6LNWr5u-sV3BpgNEV6eZcEo70Fq3zRxd0H1cNEbpIBOu8 Converting percents to decimals & fractions example Converting percentages to decimals and fractions is a fundamental math skill. To convert 18% into a decimal, simply divide by 100, resulting in 0.18. To express it as a simplified fraction, find the greatest common factor, which in this case is 2, and divide both the numerator and denominator by it, giving us 9/50. https://cdn.kastatic.org/ka-youtube-converted/-gB1y-PMWfs.mp4/-gB1y-PMWfs.mp4 212 Business Maths https://www.khanacademy.org/math/mappers/operations-and-algebraic-thinking-220-223/x261c2cc7:percent-decimal-fraction-conversions/e/converting-between-fractions-and-percents 2025-02-10T05:04:39.155459793Z Convert percents to fractions Practice writing percents as fractions. For example, convert 30% to a simplified fraction. Ben exercise https://www.khanacademy.org/math/mappers/operations-and-algebraic-thinking-220-223/x261c2cc7:percent-decimal-fraction-conversions/v/converting-decimals-to-percents-ex-1 2021-07-02T09:35:25Z Converting decimals to percents: 0.601 Percents can be written in decimal form. ​Per-cent means per-100. So, we divide the percent by 100 to get an equivalent decimal. Then, we remove the percent sign (%). For example, 65% can be converted to decimal form by solving 65÷100. So, 65%=0.65. Another way to think of dividing by 100 is moving the decimal two places to the left. Sal Khan video https://cdn.kastatic.org/googleusercontent/aynrcvcvr3TR5XMbVf7lVFMmYj0eIXMX0AJ5UARiA5Vvjk99dxmbWc0V73wRZlVc7Stk9kmPAzgJiKMlW7hYMjw Converting decimals to percents: 0.601 Percents can be written in decimal form. ​Per-cent means per-100. So, we divide the percent by 100 to get an equivalent decimal. Then, we remove the percent sign (%). For example, 65% can be converted to decimal form by solving 65÷100. So, 65%=0.65. Another way to think of dividing by 100 is moving the decimal two places to the left. https://cdn.kastatic.org/ka-youtube-converted/5z568fLBQyQ.mp4/5z568fLBQyQ.mp4 156 Business Maths https://www.khanacademy.org/math/mappers/operations-and-algebraic-thinking-220-223/x261c2cc7:percent-decimal-fraction-conversions/e/converting_decimals_to_percents 2025-02-13T21:04:37.380846713Z Convert decimals to percents Practice expressing a decimal like 0.546 as a percent. Marcia Lee exercise https://www.khanacademy.org/math/cc-sixth-grade-math/x0267d782:cc-6th-rates-and-percentages/cc-6th-percentages/v/percent-from-fraction-models 2023-06-30T02:13:42.781179102Z Percents from fraction models Converting fractions to percentages is a valuable skill in math. To do this, rewrite the fraction with a denominator of 100, as "percent" means "per 100." For example, 7/10 equals 70/100, or 70%. Additionally, you can add percentages together, such as 100% + 80% = 180%. video https://cdn.kastatic.org/googleusercontent/8LiIwK0FicXhm_UCioDQgLUFAbDVh8it7RHvycxRy7JYmzuE6ee9hVl255nWTPY8l5-6vxjd6d6eCFs7BCb8qsYa Percents from fraction models Converting fractions to percentages is a valuable skill in math. To do this, rewrite the fraction with a denominator of 100, as "percent" means "per 100." For example, 7/10 equals 70/100, or 70%. Additionally, you can add percentages together, such as 100% + 80% = 180%. https://cdn.kastatic.org/ka-youtube-converted/nV6bRozq5Po.mp4/nV6bRozq5Po.mp4 262 Business Maths https://www.khanacademy.org/math/cc-sixth-grade-math/x0267d782:cc-6th-rates-and-percentages/cc-6th-percentages/e/percents-from-fraction-models 2026-04-07T23:55:07.30621384Z Percents from fraction models Identify percents from fraction models. Lindsay exercise https://www.khanacademy.org/math/class-6-od/xc64d76c04ac22b26:business-maths-odia/xc64d76c04ac22b26:percentage-and-conversions-into-fractions-and-ratios-odia-class-6/e/percentage-to-ratio-conversions 2025-06-25T14:29:21.853064708Z Percentage to ratio conversions Percentage to ratio conversions Ashish Gupta exercise https://www.khanacademy.org/math/6th-engage-ny/engage-6th-module-1/6th-module-1-topic-d/v/solving-percent-problems-3 2021-07-02T09:35:35Z Percent word problem: 78 is 15% of what number? In this example, you working with us to find the number that is expressed as a given percentage. We'll create a simple algebraic equation to solve! Sal Khan video https://cdn.kastatic.org/googleusercontent/u60J9-wht1Yf692Os-hjxuy-Jdp3nyRGhR-hsh9uObiBtDOVOsYdGJjzVBDRsJZ_0omhP9CKln6pYlsgPcb8KlQ Percent word problem: 78 is 15% of what number? In this example, you working with us to find the number that is expressed as a given percentage. We'll create a simple algebraic equation to solve! https://cdn.kastatic.org/ka-youtube-converted/DAikW24_O0A.mp4/DAikW24_O0A.mp4 326 Business Maths https://www.khanacademy.org/math/cc-sixth-grade-math/x0267d782:cc-6th-rates-and-percentages/cc-6th-percent-problems/e/finding_percents 2025-02-10T05:04:39.155459793Z Finding percents Find a percent of a quantity as a rate per 100; solve problems involving finding the whole, given a part and the percent. Christi Rockwell exercise https://www.khanacademy.org/math/6th-engage-ny/engage-6th-module-1/6th-module-1-topic-d/v/percent-word-problems-1-example-2 2021-07-02T09:35:29Z Percent word problem: penguins You're given the percent in this example and asked to find the whole number represented by the percent. Sal Khan video https://cdn.kastatic.org/googleusercontent/Ji26ORWw-CRPT-_IKpLLAGrxkvHqNl7X3OcUCRBlMfhWaPQbsr0QIiQOdprgAsPtZjjLV5n96yk6I8_r6UPZ3YtB Percent word problem: penguins You're given the percent in this example and asked to find the whole number represented by the percent. https://cdn.kastatic.org/ka-youtube-converted/gKywkLHV6Ko.mp4/gKywkLHV6Ko.mp4 209 Business Maths https://www.khanacademy.org/math/cc-sixth-grade-math/x0267d782:cc-6th-rates-and-percentages/cc-6th-percent-word-problems/e/percentage_word_problems_1 2026-03-24T23:41:07.080866137Z Percent word problems Practice solving word problems involving percents. Sandy Knight exercise https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-data-statistics/mean-and-median/v/mean-median-and-mode 2021-07-02T09:35:33Z Mean, median, & mode example Here we give you a set of numbers and then ask you to find the mean, median, and mode. It's your first opportunity to practice with us! Sal Khan video https://cdn.kastatic.org/googleusercontent/XO41bx61VCaBIqGEW5twdbSuuSR_FvZOslArqu3JarSQbHbBgquWeq_EsBGPvqRW4c9a0BPVLY-LxMIwZUaZSAEb Mean, median, & mode example Here we give you a set of numbers and then ask you to find the mean, median, and mode. It's your first opportunity to practice with us! https://cdn.kastatic.org/ka-youtube-converted/k3aKKasOmIw.mp4/k3aKKasOmIw.mp4 235 Business Maths https://www.khanacademy.org/math/class-7-ncf/x063f95a40c290960:connecting-the-dots/x063f95a40c290960:average-or-arithmetic-mean-a-m/e/average-mean-of-data-odia-class-6 2025-02-04T09:38:17.081068692Z Average (Mean of data) Practice problems to learn how to calculate mean of ungrouped data. Satya Swaroop exercise