|
1.
31 – 31 =
0
2
|
2.
21 – 0 =
2
21
|
3.
9 – 2 =
7
1
|
4.
37 + 10 =
2
47
|
|
5.
25 – 23 =
1
2
|
6.
40 + 5 =
2
45
|
7.
49 + 0 =
49
2
|
8.
10 + 28 =
38
2
|
|
9.
13 + 25 =
38
2
|
10.
27 + 1 =
28
2
|
11.
48 + 0 =
48
2
|
12.
49 – 17 =
32
2
|
|
13.
22 + 13 =
2
35
|
14.
25 + 25 =
50
2
|
15.
3 – 0 =
1
3
|
16.
23 – 13 =
1
10
|
|
17.
25 + 15 =
2
40
|
18.
49 – 44 =
5
1
|
19.
48 + 1 =
49
2
|
20.
41 + 0 =
41
2
|
|
1.
31 – 31 =
0
2
|
2.
21 – 0 =
2
21
|
3.
9 – 2 =
7
1
|
4.
37 + 10 =
2
47
|
|
5.
25 – 23 =
1
2
|
6.
40 + 5 =
2
45
|
7.
49 + 0 =
49
2
|
8.
10 + 28 =
38
2
|
|
9.
13 + 25 =
38
2
|
10.
27 + 1 =
28
2
|
11.
48 + 0 =
48
2
|
12.
49 – 17 =
32
2
|
|
13.
22 + 13 =
2
35
|
14.
25 + 25 =
50
2
|
15.
3 – 0 =
1
3
|
16.
23 – 13 =
1
10
|
|
17.
25 + 15 =
2
40
|
18.
49 – 44 =
5
1
|
19.
48 + 1 =
49
2
|
20.
41 + 0 =
41
2
|