kellyrx2002 kellyrx2002
  • 03-01-2017
  • Mathematics
contestada

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

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Drewivy0203
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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