|
1.
21 + 1 =
2
22
|
2.
3 – 2 =
2
1
|
3.
16 + 18 =
2
34
|
4.
18 + 4 =
2
22
|
|
5.
37 + 4 =
41
2
|
6.
40 + 10 =
2
50
|
7.
23 – 12 =
11
1
|
8.
1 – 0 =
1
2
|
|
9.
41 – 7 =
2
34
|
10.
34 – 24 =
1
10
|
11.
33 – 23 =
10
1
|
12.
8 – 1 =
1
7
|
|
13.
43 – 34 =
9
1
|
14.
34 – 8 =
2
26
|
15.
3 – 0 =
1
3
|
16.
50 + 0 =
2
50
|
|
17.
48 + 2 =
2
50
|
18.
23 + 3 =
2
26
|
19.
39 + 10 =
49
2
|
20.
12 – 7 =
1
5
|
|
1.
21 + 1 =
2
22
|
2.
3 – 2 =
2
1
|
3.
16 + 18 =
2
34
|
4.
18 + 4 =
2
22
|
|
5.
37 + 4 =
41
2
|
6.
40 + 10 =
2
50
|
7.
23 – 12 =
11
1
|
8.
1 – 0 =
1
2
|
|
9.
41 – 7 =
2
34
|
10.
34 – 24 =
1
10
|
11.
33 – 23 =
10
1
|
12.
8 – 1 =
1
7
|
|
13.
43 – 34 =
9
1
|
14.
34 – 8 =
2
26
|
15.
3 – 0 =
1
3
|
16.
50 + 0 =
2
50
|
|
17.
48 + 2 =
2
50
|
18.
23 + 3 =
2
26
|
19.
39 + 10 =
49
2
|
20.
12 – 7 =
1
5
|