Addition
9+10
What is 19
12+13
What is 25?
30+12
20-9
2x2
What is 4?
5+7
What is 12
16+21
What is 37?
42+24
10-5
What is 5?
2x5
What is 10?
6+10
What is 16?
21+21
73+22
20-3
5x5
What is 25?
10+10
What is 20?
33+11
36+41
56-7
What is 49?
4x5
What is 20?
4+4
54+24
What is 78?
35+32
What is 67
72-5
What is 67?
What is 60?