Use the "double minus one" strategy to solve \(8 + 7\).

Write the number sentence.

8+7
=2(-1)+10+7
=-2+10+7
=8+7

Answered by Anonymous | 2024-06-10

**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

Answered by ahmedishaal | 2024-06-11

To solve 8 + 7 using 'Doubles Minus One', double the highest addend (8) to get 16, then subtract 1 to obtain 15. Thus, 8 + 7 equals 15. The number sentence is represented as 8 + 7 = 15.
;

Answered by ahmedishaal | 2024-12-17