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