1.
29 + 13 =
2
42
|
2.
9 + 12 =
21
2
|
3.
30 – 1 =
2
29
|
4.
21 + 9 =
30
2
|
5.
1 – 1 =
2
0
|
6.
31 + 15 =
46
2
|
7.
40 – 17 =
23
2
|
8.
12 + 19 =
31
2
|
9.
47 – 8 =
39
2
|
10.
28 + 16 =
2
44
|
11.
9 – 1 =
8
1
|
12.
8 – 4 =
4
1
|
13.
16 – 2 =
1
14
|
14.
27 + 15 =
42
2
|
15.
45 + 1 =
46
2
|
16.
6 – 0 =
6
1
|
17.
15 – 0 =
1
15
|
18.
24 + 15 =
39
2
|
19.
41 + 3 =
44
2
|
20.
30 + 6 =
36
2
|
1.
29 + 13 =
2
42
|
2.
9 + 12 =
21
2
|
3.
30 – 1 =
2
29
|
4.
21 + 9 =
30
2
|
5.
1 – 1 =
2
0
|
6.
31 + 15 =
46
2
|
7.
40 – 17 =
23
2
|
8.
12 + 19 =
31
2
|
9.
47 – 8 =
39
2
|
10.
28 + 16 =
2
44
|
11.
9 – 1 =
8
1
|
12.
8 – 4 =
4
1
|
13.
16 – 2 =
1
14
|
14.
27 + 15 =
42
2
|
15.
45 + 1 =
46
2
|
16.
6 – 0 =
6
1
|
17.
15 – 0 =
1
15
|
18.
24 + 15 =
39
2
|
19.
41 + 3 =
44
2
|
20.
30 + 6 =
36
2
|