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