0 + 0 =
10
2
1
0
3
Add the following.
0 + 7 =
7
70
0 - 0 =
9
When a certain number is added to zero, the sum will be
That number
8
4
- 0 =
6
How many apples are in the box?
5
Subtract 4 - 0
Subtract the following?
9 - 0 =
