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