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