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