|
1.
15 – 1 =
14
1
|
2.
39 + 8 =
2
47
|
3.
6 + 20 =
26
2
|
4.
38 + 11 =
2
49
|
|
5.
21 + 12 =
2
33
|
6.
49 + 0 =
2
49
|
7.
17 + 27 =
44
2
|
8.
20 – 13 =
7
1
|
|
9.
31 – 27 =
1
4
|
10.
1 – 1 =
0
2
|
11.
30 + 0 =
30
2
|
12.
24 + 15 =
39
2
|
|
13.
34 – 24 =
10
1
|
14.
36 – 16 =
2
20
|
15.
21 – 16 =
1
5
|
16.
10 + 15 =
25
2
|
|
17.
13 – 4 =
1
9
|
18.
46 – 10 =
36
2
|
19.
8 + 33 =
41
2
|
20.
13 – 5 =
8
1
|
|
1.
15 – 1 =
14
1
|
2.
39 + 8 =
2
47
|
3.
6 + 20 =
26
2
|
4.
38 + 11 =
2
49
|
|
5.
21 + 12 =
2
33
|
6.
49 + 0 =
2
49
|
7.
17 + 27 =
44
2
|
8.
20 – 13 =
7
1
|
|
9.
31 – 27 =
1
4
|
10.
1 – 1 =
0
2
|
11.
30 + 0 =
30
2
|
12.
24 + 15 =
39
2
|
|
13.
34 – 24 =
10
1
|
14.
36 – 16 =
2
20
|
15.
21 – 16 =
1
5
|
16.
10 + 15 =
25
2
|
|
17.
13 – 4 =
1
9
|
18.
46 – 10 =
36
2
|
19.
8 + 33 =
41
2
|
20.
13 – 5 =
8
1
|