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