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