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