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