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