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