1.
20 – 10 =
10
4
|
2.
12 – 9 =
3
2
|
3.
8 – 8 =
0
4
|
4.
10 – 2 =
8
9
|
5.
13 – 3 =
8
10
|
6.
3 – 3 =
0
1
|
7.
3 – 0 =
6
3
|
8.
8 – 4 =
4
6
|
9.
6 – 1 =
10
5
|
10.
17 – 3 =
9
14
|
11.
18 – 17 =
1
6
|
12.
5 – 1 =
4
3
|
13.
6 – 3 =
3
6
|
14.
20 – 13 =
7
8
|
15.
3 – 2 =
5
1
|
16.
13 – 3 =
10
15
|
17.
9 – 8 =
1
6
|
18.
3 – 2 =
2
1
|
19.
12 – 2 =
10
4
|
20.
20 – 20 =
0
2
|
1.
20 – 10 =
10
4
|
2.
12 – 9 =
3
2
|
3.
8 – 8 =
0
4
|
4.
10 – 2 =
8
9
|
5.
13 – 3 =
8
10
|
6.
3 – 3 =
0
1
|
7.
3 – 0 =
6
3
|
8.
8 – 4 =
4
6
|
9.
6 – 1 =
10
5
|
10.
17 – 3 =
9
14
|
11.
18 – 17 =
1
6
|
12.
5 – 1 =
4
3
|
13.
6 – 3 =
3
6
|
14.
20 – 13 =
7
8
|
15.
3 – 2 =
5
1
|
16.
13 – 3 =
10
15
|
17.
9 – 8 =
1
6
|
18.
3 – 2 =
2
1
|
19.
12 – 2 =
10
4
|
20.
20 – 20 =
0
2
|