1.
8 + 17 =
2
25
|
2.
1 – 0 =
2
1
|
3.
7 – 3 =
4
1
|
4.
47 – 25 =
2
22
|
5.
18 – 15 =
3
1
|
6.
27 + 3 =
2
30
|
7.
39 + 4 =
2
43
|
8.
42 + 0 =
2
42
|
9.
18 + 21 =
39
2
|
10.
24 + 23 =
47
2
|
11.
8 + 37 =
2
45
|
12.
43 – 7 =
36
2
|
13.
39 – 38 =
1
2
|
14.
7 – 7 =
0
2
|
15.
21 – 6 =
1
15
|
16.
22 – 13 =
9
1
|
17.
35 – 13 =
22
2
|
18.
7 + 18 =
2
25
|
19.
21 + 3 =
2
24
|
20.
46 – 38 =
1
8
|
1.
8 + 17 =
2
25
|
2.
1 – 0 =
2
1
|
3.
7 – 3 =
4
1
|
4.
47 – 25 =
2
22
|
5.
18 – 15 =
3
1
|
6.
27 + 3 =
2
30
|
7.
39 + 4 =
2
43
|
8.
42 + 0 =
2
42
|
9.
18 + 21 =
39
2
|
10.
24 + 23 =
47
2
|
11.
8 + 37 =
2
45
|
12.
43 – 7 =
36
2
|
13.
39 – 38 =
1
2
|
14.
7 – 7 =
0
2
|
15.
21 – 6 =
1
15
|
16.
22 – 13 =
9
1
|
17.
35 – 13 =
22
2
|
18.
7 + 18 =
2
25
|
19.
21 + 3 =
2
24
|
20.
46 – 38 =
1
8
|