Answer the question
12+11=23
Answer the question
13+5=18
Answer the question
18-5=13
Answer the question
15-6=9
Answer the question
9+6=15
Answer the question
17-3=14
Answer the question
10+15=25
Answer the question
8-2=6
Answer the question
20-4=16
Answer the question
16-7=9
Answer the question
6+7=13
Answer the question
7+8=15