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

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kellyrx2002 kellyrx2002

03-01-2017
Mathematics

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

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Drewivy0203 Drewivy0203 · Answer 1 · 2017-01-03T22:56:48+01:00

Drewivy0203 Drewivy0203

03-01-2017

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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