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