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