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