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