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