Click "next" to start subtraction - 4 flash cards

4 - 4 0
5 - 4 1
6 - 4 2
7 - 4 3
8 - 4 4
9 - 4 5
10 - 4 6
11 - 4 7
12 - 4 8
13 - 4 9
14 - 4 10
15 - 4 11