Adding 1 vs. adding 10 | Addition and subtraction | 1st grade | Khan Academy
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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 ...
207.4K viewsJul 6, 2017
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