1.
6 – 1 =
6
2
5
1
|
2.
9 – 0 =
2
13
10
9
|
3.
16 – 15 =
4
1
3
2
|
4.
8 – 1 =
7
9
12
1
|
5.
18 – 9 =
6
1
8
9
|
6.
15 – 10 =
5
2
4
1
|
7.
1 – 1 =
4
0
2
3
|
8.
4 – 2 =
6
3
2
7
|
9.
17 – 0 =
21
17
13
12
|
10.
12 – 9 =
8
4
3
1
|
11.
9 – 6 =
7
5
4
3
|
12.
5 – 3 =
6
4
1
2
|
13.
3 – 3 =
2
1
3
0
|
14.
9 – 1 =
11
8
6
9
|
15.
16 – 10 =
2
6
1
5
|
16.
3 – 2 =
6
2
1
5
|
17.
2 – 1 =
5
1
2
4
|
18.
18 – 1 =
18
8
17
20
|
19.
13 – 12 =
1
3
6
4
|
20.
2 – 0 =
3
2
5
1
|
1.
6 – 1 =
6
2
5
1
|
2.
9 – 0 =
2
13
10
9
|
3.
16 – 15 =
4
1
3
2
|
4.
8 – 1 =
7
9
12
1
|
5.
18 – 9 =
6
1
8
9
|
6.
15 – 10 =
5
2
4
1
|
7.
1 – 1 =
4
0
2
3
|
8.
4 – 2 =
6
3
2
7
|
9.
17 – 0 =
21
17
13
12
|
10.
12 – 9 =
8
4
3
1
|
11.
9 – 6 =
7
5
4
3
|
12.
5 – 3 =
6
4
1
2
|
13.
3 – 3 =
2
1
3
0
|
14.
9 – 1 =
11
8
6
9
|
15.
16 – 10 =
2
6
1
5
|
16.
3 – 2 =
6
2
1
5
|
17.
2 – 1 =
5
1
2
4
|
18.
18 – 1 =
18
8
17
20
|
19.
13 – 12 =
1
3
6
4
|
20.
2 – 0 =
3
2
5
1
|