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


Answer Link

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