1.
39 + 8 =
2
4
47
3
|
2.
24 – 21 =
3
4
1
2
|
3.
49 – 16 =
3
33
4
2
|
4.
36 + 3 =
3
2
39
4
|
5.
15 – 1 =
3
14
2
1
|
6.
27 – 15 =
12
2
1
3
|
7.
28 – 8 =
4
2
3
20
|
8.
15 + 29 =
3
44
2
4
|
9.
18 – 15 =
3
2
4
1
|
10.
49 + 0 =
4
49
2
3
|
11.
43 – 14 =
29
4
2
3
|
12.
39 – 31 =
3
8
2
1
|
13.
14 + 7 =
3
2
4
21
|
14.
32 + 15 =
3
47
4
2
|
15.
32 + 10 =
3
2
42
4
|
16.
36 + 11 =
3
47
2
4
|
17.
29 + 17 =
4
3
46
2
|
18.
29 – 18 =
11
2
3
1
|
19.
21 + 11 =
32
4
2
3
|
20.
20 – 1 =
2
4
3
19
|
1.
39 + 8 =
2
4
47
3
|
2.
24 – 21 =
3
4
1
2
|
3.
49 – 16 =
3
33
4
2
|
4.
36 + 3 =
3
2
39
4
|
5.
15 – 1 =
3
14
2
1
|
6.
27 – 15 =
12
2
1
3
|
7.
28 – 8 =
4
2
3
20
|
8.
15 + 29 =
3
44
2
4
|
9.
18 – 15 =
3
2
4
1
|
10.
49 + 0 =
4
49
2
3
|
11.
43 – 14 =
29
4
2
3
|
12.
39 – 31 =
3
8
2
1
|
13.
14 + 7 =
3
2
4
21
|
14.
32 + 15 =
3
47
4
2
|
15.
32 + 10 =
3
2
42
4
|
16.
36 + 11 =
3
47
2
4
|
17.
29 + 17 =
4
3
46
2
|
18.
29 – 18 =
11
2
3
1
|
19.
21 + 11 =
32
4
2
3
|
20.
20 – 1 =
2
4
3
19
|