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Anonymous Anonymous
  • 16-12-2015
  • Mathematics
Answered

Use doubles to help you add 7+8

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AgiethaAP AgiethaAP
  • 16-12-2015

7 + 8 = 15 konfirmasion

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Anonymous Anonymous
  • 16-12-2015

you can subtract 8 -1=7 and then add 7+7=14 and then do 14+1=15 because we subtracted 1 from 8.

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