|
1.
17 – 8 =
9
1
|
2.
42 – 0 =
2
42
|
3.
21 – 15 =
1
6
|
4.
10 + 38 =
48
2
|
|
5.
23 + 7 =
30
2
|
6.
1 – 1 =
2
0
|
7.
1 + 4 =
5
1
|
8.
29 – 21 =
1
8
|
|
9.
40 + 9 =
49
2
|
10.
46 – 24 =
22
2
|
11.
42 – 37 =
5
1
|
12.
42 + 7 =
49
2
|
|
13.
17 – 7 =
1
10
|
14.
24 + 1 =
2
25
|
15.
25 – 19 =
1
6
|
16.
42 – 34 =
8
1
|
|
17.
48 – 21 =
27
2
|
18.
29 + 20 =
49
2
|
19.
47 + 1 =
2
48
|
20.
40 – 23 =
17
2
|
|
1.
17 – 8 =
9
1
|
2.
42 – 0 =
2
42
|
3.
21 – 15 =
1
6
|
4.
10 + 38 =
48
2
|
|
5.
23 + 7 =
30
2
|
6.
1 – 1 =
2
0
|
7.
1 + 4 =
5
1
|
8.
29 – 21 =
1
8
|
|
9.
40 + 9 =
49
2
|
10.
46 – 24 =
22
2
|
11.
42 – 37 =
5
1
|
12.
42 + 7 =
49
2
|
|
13.
17 – 7 =
1
10
|
14.
24 + 1 =
2
25
|
15.
25 – 19 =
1
6
|
16.
42 – 34 =
8
1
|
|
17.
48 – 21 =
27
2
|
18.
29 + 20 =
49
2
|
19.
47 + 1 =
2
48
|
20.
40 – 23 =
17
2
|