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Arte-miy333 [17]
3 years ago
11

Use doubles to find the sum of 7+8.

Mathematics
2 answers:
lyudmila [28]3 years ago
6 0
I believe, 8+8=16, 16-1=15
Tems11 [23]3 years ago
4 0
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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