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