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12 September, 10:50

Describe how to use a ten fact to find the difference for 15-8

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  1. 12 September, 11:08
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    This is pretty simple if you learn how! All you really need to do is round.

    15 is closest to 20,

    and 8 is closest to 10.

    You could also round down.

    10, and 8.

    10 - 8 = 2, and with your extra five, 5 + 2 = 7
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