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Use doubles minus one to solve 8 + 7

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Use doubles minus one to solve 8 + 7

asked Sep 23, 2017 98.0k views

3 votes

Use doubles minus one to solve 8 + 7

Mathematics
middle-school

Fred Novack asked

8.6k points

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1 Answer

7 votes

like 2*8-1=16-1=15
easy

DerVO answered Sep 29, 2017

by DerVO

9.3k points

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