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