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