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