https://www.khanacademy.org/math/cc-seventh-grade-math/cc-7th-fractions-decimals/cc-7th-fracs-to-decimals/v/comparing-rational-numbers 2021-06-28T22:10:44Z Comparing rational numbers Comparing Rational Numbers video https://cdn.kastatic.org/googleusercontent/6zSQ34mNxBm2sGSeRdCxuY61rUukQN_kzeW16sfxHKxp_NHP6oeiIDtU6oDg1waw1ZOU_z3pzcz8IKGnhseVrl3A9Q Comparing rational numbers Comparing Rational Numbers https://cdn.kastatic.org/ka-youtube-converted/VZOHWaw5dqM.mp4/VZOHWaw5dqM.mp4 419 Operaciones con números racionales https://www.khanacademy.org/math/revision-term-1-up-math-class-7/x626965769808ea32:week-1/x626965769808ea32:rational-numbers/e/order-rational-numbers-up-new 2026-04-08T00:54:09.631945657Z Order rational numbers . Aakash Bagga exercise https://www.khanacademy.org/math/cc-seventh-grade-math/x6b17ba59:rational-numbers-addition-and-subtraction/cc-7th-add-sub-rational-numbers/v/adding-and-subtracting-a-decimal-percentage-and-fraction 2020-09-16T18:09:48Z Adding & subtracting rational numbers: 79% - 79.1 - 58 1/10 Sal evaluates 79% - 79.1 - 58 1/10. Sal Khan video https://cdn.kastatic.org/googleusercontent/tZWkUFrFe9Z_H05VYRNW3aLy166bwYjpJrPTECgbcnTvH8wG4oruBfmNwHGeRW2RMBMz1iDKbWZ3_VZNYuJSlkHR Adding & subtracting rational numbers: 79% - 79.1 - 58 1/10 Sal evaluates 79% - 79.1 - 58 1/10. https://cdn.kastatic.org/ka-youtube-converted/FSpSrZQzzVs.mp4/FSpSrZQzzVs.mp4 269 Operaciones con números racionales https://www.khanacademy.org/math/cc-seventh-grade-math/x6b17ba59:rational-numbers-addition-and-subtraction/cc-7th-add-sub-rational-numbers/e/adding_and_subtracting_rational_numbers 2023-07-31T23:04:20.970726205Z Adding & subtracting rational numbers Practice adding and subtracting negative fractions, decimals, and percents. Peter Collingridge exercise https://www.khanacademy.org/math/cc-seventh-grade-math/x6b17ba59:rational-numbers-addition-and-subtraction/cc-7th-add-sub-rational-numbers/v/adding-fractions-decimals-and-percentages 2020-10-23T19:16:44Z Adding & subtracting rational numbers: 0.79 - 4/3 - 1/2 + 150% Sal evaluates 0.79 - 4/3 - 1/2 + 150%. Sal Khan video https://cdn.kastatic.org/googleusercontent/hxJmi4LrL6VShnTZyO3KymEsuGWiCKZp1wWmsnrJJDU6l3TV4jdZX_azZO0lykMXXiKqo1XA_CN6jnK1FarD3kqBbA Adding & subtracting rational numbers: 0.79 - 4/3 - 1/2 + 150% Sal evaluates 0.79 - 4/3 - 1/2 + 150%. https://cdn.kastatic.org/ka-youtube-converted/xEDnwEOOf7Y.mp4/xEDnwEOOf7Y.mp4 274 Operaciones con números racionales https://www.khanacademy.org/math/cc-seventh-grade-math/cc-7th-negative-numbers-multiply-and-divide/cc-7th-multistep-word-probs/v/multistep-word-problems-example-1 2021-06-21T15:29:04Z Rational number word problem: school report First visualize this word problem then use subtraction and multiplication of decimals and fractions to get at the answer. Sal Khan video https://cdn.kastatic.org/googleusercontent/wBzzP3D06KMqMfmW3s_dVP_okhLNFkE7fqyNR4K4InMvOwYFVITcnB-_LdGvbnRmOZFx1TgivSwssRk-nfI7lReO Rational number word problem: school report First visualize this word problem then use subtraction and multiplication of decimals and fractions to get at the answer. https://cdn.kastatic.org/ka-youtube-converted/GwycEivqYYI.mp4/GwycEivqYYI.mp4 220 Operaciones con números racionales https://www.khanacademy.org/math/cc-seventh-grade-math/cc-7th-negative-numbers-multiply-and-divide/cc-7th-multistep-word-probs/v/multistep-word-problems-example-2 2021-06-21T15:29:10Z Rational number word problem: cosmetics Remember units of measurement? Convert minutes into hours and put your knowledge of fractions to work in this word problem. Sal Khan video https://cdn.kastatic.org/googleusercontent/JLB_Qkd-L_2VJmXMwcfRdcQrMR0quGxfbeq8rj9dEmjFb0kMkJ0ZjlLVjbF-uizDp2RZ9UpMMxlbk25f5YM4WIht Rational number word problem: cosmetics Remember units of measurement? Convert minutes into hours and put your knowledge of fractions to work in this word problem. https://cdn.kastatic.org/ka-youtube-converted/QfsK8ZyC_bE.mp4/QfsK8ZyC_bE.mp4 145 Operaciones con números racionales https://www.khanacademy.org/math/cc-seventh-grade-math/cc-7th-negative-numbers-multiply-and-divide/cc-7th-multistep-word-probs/v/multistep-word-problems-example-3 2021-06-21T15:29:14Z Rational number word problem: cab Budgeting money is one of the most valuable math skills you'll learn. Practice with us as we figure out how much money is left after a cab fare. Sal Khan video https://cdn.kastatic.org/googleusercontent/bXiYceM08r81Rs9moI0j8N_Vgumg9PNR_q_L0IXOYOeiC6kLB1imJZA1u32HbUnTxoRH7bG8aDkuVVSWlv82SlmU Rational number word problem: cab Budgeting money is one of the most valuable math skills you'll learn. Practice with us as we figure out how much money is left after a cab fare. https://cdn.kastatic.org/ka-youtube-converted/-sSDb_wZqKQ.mp4/-sSDb_wZqKQ.mp4 128 Operaciones con números racionales https://www.khanacademy.org/math/cc-seventh-grade-math/cc-7th-negative-numbers-multiply-and-divide/cc-7th-multistep-word-probs/v/rational-number-word-problem-example-1 2021-06-21T15:29:09Z Rational number word problem: ice Word problems force us to put concepts to work using real-world applications. In this example, determine the volume of frozen water and express the answer as a fraction. Sal Khan video https://cdn.kastatic.org/googleusercontent/W_9y8ZUMNt7TERy_zJ5LokCxV2U7UODKjdEa6uK9MybyeDpD496HVJw46oHLotgb8OwgvM1SLmwLkOilyU21faiDcQ Rational number word problem: ice Word problems force us to put concepts to work using real-world applications. In this example, determine the volume of frozen water and express the answer as a fraction. https://cdn.kastatic.org/ka-youtube-converted/MZpULgKhaEU.mp4/MZpULgKhaEU.mp4 201 Operaciones con números racionales https://www.khanacademy.org/math/cc-seventh-grade-math/cc-7th-negative-numbers-multiply-and-divide/cc-7th-multistep-word-probs/v/rational-number-word-problem-example-2 2021-06-21T15:29:10Z Rational number word problem: computers In this word problem, we'll compare the weight of two objects using a ratio of integers. We'll practice simplifying a fraction, too. Sal Khan video https://cdn.kastatic.org/googleusercontent/L5pBi8JWua5ALr_vFVkk72QButXl0cMpoWOnbO0ZQycfzumodNkkWgTnIdkJ-v8RqcQ2a1iA9EMAjjwD_REQmmGB Rational number word problem: computers In this word problem, we'll compare the weight of two objects using a ratio of integers. We'll practice simplifying a fraction, too. https://cdn.kastatic.org/ka-youtube-converted/oqAgaGeBOAU.mp4/oqAgaGeBOAU.mp4 153 Operaciones con números racionales https://www.khanacademy.org/math/cc-seventh-grade-math/cc-7th-negative-numbers-multiply-and-divide/cc-7th-multistep-word-probs/v/u09-l1-t2-we4-adding-real-numbers-application 2021-06-21T15:29:11Z Rational number word problem: checking account Your checking account is overdrawn. Not good. Use your knowledge of decimals and adding negative and positive numbers to bring your account back into the black. Sal Khan video https://cdn.kastatic.org/googleusercontent/3wbiHiNK6BcgJS4QwbaLrsWhwO3ZdmN6QcJ3-179g_uWEsp99vUI1Sn2_kLoUnoCllUdu0Ycu7-3baNrF_MYjpk Rational number word problem: checking account Your checking account is overdrawn. Not good. Use your knowledge of decimals and adding negative and positive numbers to bring your account back into the black. https://cdn.kastatic.org/ka-youtube-converted/fFdOr8U4mnI.mp4/fFdOr8U4mnI.mp4 195 Operaciones con números racionales https://www.khanacademy.org/math/cc-seventh-grade-math/cc-7th-negative-numbers-multiply-and-divide/cc-7th-multistep-word-probs/e/multistep-equations-without-variables 2026-04-07T23:17:37.123726494Z Rational number word problems Practice solving multi-step word problems. The numbers in these problems may be fractions, decimals, and percents. ivan.savov exercise https://www.khanacademy.org/math/algebra/x2f8bb11595b61c86:irrational-numbers/x2f8bb11595b61c86:sums-and-products-of-rational-and-irrational-numbers/v/proof-that-sum-of-rational-and-irrational-is-irrational 2020-12-28T16:56:56Z Proof: sum of rational & irrational is irrational The sum of any rational number and any irrational number will always be an irrational number. This allows us to quickly conclude that ½+√2 is irrational. Sal Khan video https://cdn.kastatic.org/googleusercontent/wm98IU4tKB5alFmJxiq-hFMC_L7aHKjetjMP553R8MxgTd460p0FCOn_NbUv4nynnWjCgCoJZILzLNZ8syMLLK5-Fg Proof: sum of rational & irrational is irrational The sum of any rational number and any irrational number will always be an irrational number. This allows us to quickly conclude that ½+√2 is irrational. https://cdn.kastatic.org/ka-youtube-converted/pPM72fPwIjw.mp4/pPM72fPwIjw.mp4 204 Operaciones con números racionales