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