|
1.
16 – 8 =
8
6
|
2.
7 – 2 =
5
4
|
3.
9 – 4 =
7
5
|
4.
7 – 7 =
0
4
|
|
5.
11 – 5 =
6
9
|
6.
20 – 3 =
19
17
|
7.
1 – 0 =
1
2
|
8.
18 – 0 =
21
18
|
|
9.
15 – 4 =
9
11
|
10.
14 – 9 =
5
3
|
11.
5 – 1 =
2
4
|
12.
13 – 12 =
1
5
|
|
13.
6 – 4 =
3
2
|
14.
10 – 8 =
2
7
|
15.
15 – 9 =
6
2
|
16.
5 – 4 =
1
2
|
|
17.
4 – 4 =
0
1
|
18.
5 – 3 =
2
5
|
19.
20 – 13 =
6
7
|
20.
19 – 19 =
0
2
|
|
1.
16 – 8 =
8
6
|
2.
7 – 2 =
5
4
|
3.
9 – 4 =
7
5
|
4.
7 – 7 =
0
4
|
|
5.
11 – 5 =
6
9
|
6.
20 – 3 =
19
17
|
7.
1 – 0 =
1
2
|
8.
18 – 0 =
21
18
|
|
9.
15 – 4 =
9
11
|
10.
14 – 9 =
5
3
|
11.
5 – 1 =
2
4
|
12.
13 – 12 =
1
5
|
|
13.
6 – 4 =
3
2
|
14.
10 – 8 =
2
7
|
15.
15 – 9 =
6
2
|
16.
5 – 4 =
1
2
|
|
17.
4 – 4 =
0
1
|
18.
5 – 3 =
2
5
|
19.
20 – 13 =
6
7
|
20.
19 – 19 =
0
2
|