|
1.
28 – 0 =
28
2
|
2.
7 – 6 =
2
1
|
3.
17 – 17 =
0
2
|
4.
6 + 23 =
29
2
|
|
5.
30 – 0 =
2
30
|
6.
6 + 0 =
6
1
|
7.
32 – 4 =
28
2
|
8.
11 – 1 =
10
1
|
|
9.
4 – 1 =
1
3
|
10.
9 – 2 =
1
7
|
11.
25 + 25 =
2
50
|
12.
38 – 3 =
2
35
|
|
13.
37 + 10 =
47
2
|
14.
41 + 2 =
2
43
|
15.
7 + 28 =
2
35
|
16.
31 + 5 =
36
2
|
|
17.
13 + 29 =
42
2
|
18.
21 + 14 =
2
35
|
19.
46 – 42 =
4
1
|
20.
28 + 12 =
40
2
|
|
1.
28 – 0 =
28
2
|
2.
7 – 6 =
2
1
|
3.
17 – 17 =
0
2
|
4.
6 + 23 =
29
2
|
|
5.
30 – 0 =
2
30
|
6.
6 + 0 =
6
1
|
7.
32 – 4 =
28
2
|
8.
11 – 1 =
10
1
|
|
9.
4 – 1 =
1
3
|
10.
9 – 2 =
1
7
|
11.
25 + 25 =
2
50
|
12.
38 – 3 =
2
35
|
|
13.
37 + 10 =
47
2
|
14.
41 + 2 =
2
43
|
15.
7 + 28 =
2
35
|
16.
31 + 5 =
36
2
|
|
17.
13 + 29 =
42
2
|
18.
21 + 14 =
2
35
|
19.
46 – 42 =
4
1
|
20.
28 + 12 =
40
2
|