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