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