1.
42 – 42 =
2
0
|
2.
44 – 12 =
2
32
|
3.
36 – 21 =
1
15
|
4.
3 + 1 =
4
1
|
5.
18 – 4 =
14
1
|
6.
6 + 14 =
20
2
|
7.
46 – 45 =
2
1
|
8.
31 + 16 =
47
2
|
9.
20 + 24 =
44
2
|
10.
2 + 8 =
10
1
|
11.
14 + 21 =
2
35
|
12.
35 + 2 =
2
37
|
13.
2 – 1 =
1
2
|
14.
2 – 0 =
2
1
|
15.
19 – 18 =
2
1
|
16.
7 + 31 =
38
2
|
17.
40 – 19 =
2
21
|
18.
48 + 0 =
48
2
|
19.
21 + 16 =
37
2
|
20.
23 + 9 =
2
32
|
1.
42 – 42 =
2
0
|
2.
44 – 12 =
2
32
|
3.
36 – 21 =
1
15
|
4.
3 + 1 =
4
1
|
5.
18 – 4 =
14
1
|
6.
6 + 14 =
20
2
|
7.
46 – 45 =
2
1
|
8.
31 + 16 =
47
2
|
9.
20 + 24 =
44
2
|
10.
2 + 8 =
10
1
|
11.
14 + 21 =
2
35
|
12.
35 + 2 =
2
37
|
13.
2 – 1 =
1
2
|
14.
2 – 0 =
2
1
|
15.
19 – 18 =
2
1
|
16.
7 + 31 =
38
2
|
17.
40 – 19 =
2
21
|
18.
48 + 0 =
48
2
|
19.
21 + 16 =
37
2
|
20.
23 + 9 =
2
32
|