evansanwsers evansanwsers
  • 10-10-2016
  • Mathematics
contestada

Use doubles to find the sum of 7+8.

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max55 max55
  • 10-10-2016
7+8 =15
so u can use 7+7 +1
since 15 is off number there is no exact double number for that u have to use 1
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toniahubb toniahubb
  • 10-10-2016
I believe, 8+8=16, 16-1=15
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