|
1.
50 + 0 =
50
2
|
2.
5 – 4 =
2
1
|
3.
1 – 1 =
2
0
|
4.
30 + 20 =
2
50
|
|
5.
40 + 0 =
40
2
|
6.
37 – 15 =
2
22
|
7.
29 – 22 =
7
1
|
8.
17 – 4 =
1
13
|
|
9.
33 – 6 =
2
27
|
10.
8 + 2 =
10
1
|
11.
5 – 2 =
1
3
|
12.
3 – 0 =
3
1
|
|
13.
28 + 12 =
2
40
|
14.
34 – 27 =
1
7
|
15.
40 + 7 =
47
2
|
16.
13 + 10 =
23
2
|
|
17.
23 + 15 =
2
38
|
18.
18 + 1 =
2
19
|
19.
24 – 10 =
14
1
|
20.
19 + 5 =
2
24
|
|
1.
50 + 0 =
50
2
|
2.
5 – 4 =
2
1
|
3.
1 – 1 =
2
0
|
4.
30 + 20 =
2
50
|
|
5.
40 + 0 =
40
2
|
6.
37 – 15 =
2
22
|
7.
29 – 22 =
7
1
|
8.
17 – 4 =
1
13
|
|
9.
33 – 6 =
2
27
|
10.
8 + 2 =
10
1
|
11.
5 – 2 =
1
3
|
12.
3 – 0 =
3
1
|
|
13.
28 + 12 =
2
40
|
14.
34 – 27 =
1
7
|
15.
40 + 7 =
47
2
|
16.
13 + 10 =
23
2
|
|
17.
23 + 15 =
2
38
|
18.
18 + 1 =
2
19
|
19.
24 – 10 =
14
1
|
20.
19 + 5 =
2
24
|