Question

Match the following addition statements with their answers.

• A. 13
• B. 17
• C. 15
• D. 11

Answer 1

$6+7=6+6+1$
$=12+1$
$=13$
$8+9=8+8+1$
$=16+1$
$=17$
$7+8=7+7+1$
$=14+1$
$=15$
$5+6=5+5+1$
$=10+1$
$=11$