|
1.
18 – 15 =
2
4
3
1
|
2.
20 – 3 =
17
6
22
20
|
3.
2 – 1 =
5
2
6
1
|
4.
13 – 7 =
1
7
9
6
|
|
5.
3 – 2 =
6
1
5
4
|
6.
4 – 4 =
5
0
1
2
|
7.
20 – 3 =
21
17
7
8
|
8.
9 – 7 =
2
4
3
6
|
|
9.
1 – 1 =
3
1
5
0
|
10.
20 – 13 =
4
7
8
1
|
11.
2 – 1 =
1
4
5
6
|
12.
11 – 1 =
10
3
11
13
|
|
13.
17 – 4 =
18
8
13
1
|
14.
13 – 5 =
8
5
2
7
|
15.
19 – 7 =
12
17
11
1
|
16.
5 – 4 =
6
5
2
1
|
|
17.
18 – 18 =
5
0
1
2
|
18.
15 – 14 =
5
2
3
1
|
19.
1 – 0 =
6
2
1
5
|
20.
2 – 2 =
4
3
2
0
|
|
1.
18 – 15 =
2
4
3
1
|
2.
20 – 3 =
17
6
22
20
|
3.
2 – 1 =
5
2
6
1
|
4.
13 – 7 =
1
7
9
6
|
|
5.
3 – 2 =
6
1
5
4
|
6.
4 – 4 =
5
0
1
2
|
7.
20 – 3 =
21
17
7
8
|
8.
9 – 7 =
2
4
3
6
|
|
9.
1 – 1 =
3
1
5
0
|
10.
20 – 13 =
4
7
8
1
|
11.
2 – 1 =
1
4
5
6
|
12.
11 – 1 =
10
3
11
13
|
|
13.
17 – 4 =
18
8
13
1
|
14.
13 – 5 =
8
5
2
7
|
15.
19 – 7 =
12
17
11
1
|
16.
5 – 4 =
6
5
2
1
|
|
17.
18 – 18 =
5
0
1
2
|
18.
15 – 14 =
5
2
3
1
|
19.
1 – 0 =
6
2
1
5
|
20.
2 – 2 =
4
3
2
0
|