sellssarah sellssarah

11-11-2014
English

Answered

use double minus one to solve 8+7 write the number sentence

Answer :

Аноним Аноним

11-11-2014

8+7

=2(-1)+10+7

=-2+10+7

=8+7

Answer Link

ahmedishaal ahmedishaal

22-07-2018

Doubles Minus One

Use your doubles, and subtract one. Use the highest addend.

The given expression is;

8+7

Now the highest addend is "8".

Double the 8 and then minus 1.

8+8= 16

Now, 16 - 1 = 15

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