Subtraction
3-1
2
What time is it?
How much?
6+1
7
90x4
360
6-1
6
What time is it?
How much?
7+0
7
11x9
99
10-1
9
What time is it?
How much?
8+0
8
69/3
23
1-1
0
What time is it?
How much?
6
4.62+7.42
12.04
7-0
7
What time is it?
How much?
9+2
11
12.20-.20
12