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