|
1.
4 – 1 =
1
4
3
2
|
2.
15 – 4 =
3
2
11
1
|
3.
31 – 8 =
2
23
4
3
|
4.
48 – 18 =
2
30
4
3
|
|
5.
41 + 5 =
4
2
3
46
|
6.
32 – 5 =
4
27
3
2
|
7.
48 – 27 =
3
2
4
21
|
8.
10 + 4 =
3
14
1
2
|
|
9.
15 – 0 =
2
15
3
1
|
10.
37 – 28 =
9
2
3
1
|
11.
38 + 5 =
43
2
4
3
|
12.
12 + 32 =
2
3
4
44
|
|
13.
36 – 33 =
2
3
4
1
|
14.
39 + 9 =
4
3
48
2
|
15.
34 – 5 =
3
29
2
4
|
16.
25 – 7 =
4
2
3
18
|
|
17.
17 – 9 =
8
1
2
3
|
18.
4 + 17 =
2
21
4
3
|
19.
50 + 0 =
50
3
2
4
|
20.
20 – 18 =
4
1
3
2
|
|
1.
4 – 1 =
1
4
3
2
|
2.
15 – 4 =
3
2
11
1
|
3.
31 – 8 =
2
23
4
3
|
4.
48 – 18 =
2
30
4
3
|
|
5.
41 + 5 =
4
2
3
46
|
6.
32 – 5 =
4
27
3
2
|
7.
48 – 27 =
3
2
4
21
|
8.
10 + 4 =
3
14
1
2
|
|
9.
15 – 0 =
2
15
3
1
|
10.
37 – 28 =
9
2
3
1
|
11.
38 + 5 =
43
2
4
3
|
12.
12 + 32 =
2
3
4
44
|
|
13.
36 – 33 =
2
3
4
1
|
14.
39 + 9 =
4
3
48
2
|
15.
34 – 5 =
3
29
2
4
|
16.
25 – 7 =
4
2
3
18
|
|
17.
17 – 9 =
8
1
2
3
|
18.
4 + 17 =
2
21
4
3
|
19.
50 + 0 =
50
3
2
4
|
20.
20 – 18 =
4
1
3
2
|