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