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