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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 ...
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