|
1.
1 – 1 =
2
3
4
0
|
2.
23 – 11 =
3
1
12
2
|
3.
45 – 28 =
3
2
4
17
|
4.
42 + 1 =
2
4
43
3
|
|
5.
17 – 9 =
2
3
8
1
|
6.
37 – 31 =
6
3
1
2
|
7.
38 – 27 =
11
1
3
2
|
8.
36 – 16 =
20
3
4
2
|
|
9.
21 – 18 =
1
2
4
3
|
10.
12 + 15 =
3
4
27
2
|
11.
41 – 14 =
27
3
4
2
|
12.
44 – 14 =
4
3
2
30
|
|
13.
36 + 4 =
40
2
3
4
|
14.
38 – 0 =
4
3
38
2
|
15.
26 + 17 =
43
4
2
3
|
16.
15 – 9 =
3
6
1
2
|
|
17.
44 – 41 =
1
4
3
2
|
18.
38 – 36 =
1
4
2
3
|
19.
44 – 19 =
3
4
2
25
|
20.
44 + 5 =
4
2
49
3
|
|
1.
1 – 1 =
2
3
4
0
|
2.
23 – 11 =
3
1
12
2
|
3.
45 – 28 =
3
2
4
17
|
4.
42 + 1 =
2
4
43
3
|
|
5.
17 – 9 =
2
3
8
1
|
6.
37 – 31 =
6
3
1
2
|
7.
38 – 27 =
11
1
3
2
|
8.
36 – 16 =
20
3
4
2
|
|
9.
21 – 18 =
1
2
4
3
|
10.
12 + 15 =
3
4
27
2
|
11.
41 – 14 =
27
3
4
2
|
12.
44 – 14 =
4
3
2
30
|
|
13.
36 + 4 =
40
2
3
4
|
14.
38 – 0 =
4
3
38
2
|
15.
26 + 17 =
43
4
2
3
|
16.
15 – 9 =
3
6
1
2
|
|
17.
44 – 41 =
1
4
3
2
|
18.
38 – 36 =
1
4
2
3
|
19.
44 – 19 =
3
4
2
25
|
20.
44 + 5 =
4
2
49
3
|