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