Respuesta :
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
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
