Details, Fiction and how to subtract with regrouping

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They're counting down two rows for 20 with minor recognition that it signifies two tens. Once they shift to a brand new row, there isn't a reinforcement that this is regrouping. If pupils remain struggling, demonstrate that with regrouping, each decimal position can only go around 10. This known as https://www.generationgenius.com/videolessons/into-to-regrouping-when-adding-subtracting/


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