1.
28 + 6 =
34
2
3
4
|
2.
47 + 2 =
2
4
49
3
|
3.
15 – 9 =
2
1
6
3
|
4.
4 – 4 =
4
3
2
0
|
5.
40 + 2 =
2
3
4
42
|
6.
2 – 1 =
2
1
3
4
|
7.
20 + 21 =
3
2
41
4
|
8.
50 – 41 =
1
9
3
2
|
9.
1 – 1 =
3
2
0
4
|
10.
44 – 40 =
3
2
4
1
|
11.
18 – 10 =
2
1
3
8
|
12.
12 + 19 =
2
3
4
31
|
13.
41 + 2 =
4
43
3
2
|
14.
27 + 16 =
4
3
43
2
|
15.
47 + 3 =
2
4
3
50
|
16.
29 – 9 =
2
4
3
20
|
17.
36 – 6 =
3
30
4
2
|
18.
18 – 9 =
1
2
9
3
|
19.
35 + 8 =
2
3
43
4
|
20.
31 – 27 =
2
4
1
3
|
1.
28 + 6 =
34
2
3
4
|
2.
47 + 2 =
2
4
49
3
|
3.
15 – 9 =
2
1
6
3
|
4.
4 – 4 =
4
3
2
0
|
5.
40 + 2 =
2
3
4
42
|
6.
2 – 1 =
2
1
3
4
|
7.
20 + 21 =
3
2
41
4
|
8.
50 – 41 =
1
9
3
2
|
9.
1 – 1 =
3
2
0
4
|
10.
44 – 40 =
3
2
4
1
|
11.
18 – 10 =
2
1
3
8
|
12.
12 + 19 =
2
3
4
31
|
13.
41 + 2 =
4
43
3
2
|
14.
27 + 16 =
4
3
43
2
|
15.
47 + 3 =
2
4
3
50
|
16.
29 – 9 =
2
4
3
20
|
17.
36 – 6 =
3
30
4
2
|
18.
18 – 9 =
1
2
9
3
|
19.
35 + 8 =
2
3
43
4
|
20.
31 – 27 =
2
4
1
3
|