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Regrouping to add 1-digit number | Addition and subtraction | 1st grade | Khan Academy

Sal adds 35 + 6. Watch the next lesson: https://www.khanacademy.org/math/cc-1st-grade-math/cc-1st-add-subtract/cc-1st-add-two-dig-intro/v/adding-by-getting-to-group-of-10-first?utm_source=YT&utm_medium=Desc&utm_campaign=1stgrade Missed the previous lesson? https://www.khanacademy.org/math/cc-1st-grade-math/cc-1st-add-subtract/cc-1st-add-two-dig-intro/v/breaking-apart-two-digit-addition-problems?utm_source=YT&utm_medium=Desc&utm_campaign=1stgrade 1st grade on Khan Academy: Learn the numbers from 0 to 120. About Khan Academy: Khan Academy is a nonprofit with a mission to provide a free, world-class education for anyone, anywhere. We believe learners of all ages should have […]

July 6, 2017

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Breaking apart 2-digit addition problems | Addition and subtraction | 1st grade | Khan Academy

Sal thinks about different ways to break up addition problems. Watch the next lesson: https://www.khanacademy.org/math/cc-1st-grade-math/cc-1st-add-subtract/cc-1st-add-two-dig-intro/v/regrouping-when-adding-two-digit-and-one-digit-number?utm_source=YT&utm_medium=Desc&utm_campaign=1stgrade Missed the previous lesson? https://www.khanacademy.org/math/cc-1st-grade-math/cc-1st-add-subtract/cc-1st-add-two-dig-intro/v/adding-two-digit-numbers-without-regrouping?utm_source=YT&utm_medium=Desc&utm_campaign=1stgrade 1st grade on Khan Academy: Learn the numbers from 0 to 120. About Khan Academy: Khan Academy is a nonprofit with a mission to provide a free, world-class education for anyone, anywhere. We believe learners […]

July 6, 2017

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Adding 2-digit numbers without regrouping 1 | Addition and subtraction | 1st grade | Khan Academy

Sal adds 71 + 24. Watch the next lesson: https://www.khanacademy.org/math/cc-1st-grade-math/cc-1st-add-subtract/cc-1st-add-two-dig-intro/v/adding-two-digit-numbers-without-regrouping?utm_source=YT&utm_medium=Desc&utm_campaign=1stgrade Missed the previous lesson? https://www.khanacademy.org/math/cc-1st-grade-math/cc-1st-add-subtract/cc-1st-add-ones-tens/v/understanding-place-value-when-adding-ones?utm_source=YT&utm_medium=Desc&utm_campaign=1stgrade 1st grade on Khan Academy: Learn the numbers from 0 to 120. About Khan Academy: Khan Academy is a nonprofit with a mission to provide a free, world-class education for anyone, anywhere. We believe learners of all ages should have […]

July 6, 2017

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Adding 1 vs. adding 10 | Addition and subtraction | 1st grade | Khan Academy

Sal talks about the difference between adding 1 and adding 10. Watch the next lesson: https://www.khanacademy.org/math/cc-1st-grade-math/cc-1st-add-subtract/cc-1st-add-ones-tens/v/understanding-place-value-while-adding-tens?utm_source=YT&utm_medium=Desc&utm_campaign=1stgrade Missed the previous lesson? https://www.khanacademy.org/math/cc-1st-grade-math/cc-1st-add-subtract/cc-1st-word-problems-more-fewer-20/v/more-comparison-word-problems?utm_source=YT&utm_medium=Desc&utm_campaign=1stgrade 1st grade on Khan Academy: Learn the numbers from 0 to 120. About Khan Academy: Khan Academy is a nonprofit with a mission to provide a free, world-class education for anyone, anywhere. We believe […]

July 6, 2017

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