|
1.
50 – 10 =
3
40
4
2
|
2.
8 – 4 =
4
2
3
1
|
3.
49 – 5 =
2
44
3
4
|
4.
48 + 1 =
49
4
3
2
|
|
5.
3 + 28 =
31
2
4
3
|
6.
49 – 39 =
1
10
2
3
|
7.
36 + 5 =
2
41
3
4
|
8.
48 – 46 =
3
2
1
4
|
|
9.
25 – 11 =
14
2
3
1
|
10.
1 – 0 =
1
3
2
4
|
11.
9 + 21 =
4
30
3
2
|
12.
38 – 28 =
1
10
3
2
|
|
13.
46 – 11 =
3
4
2
35
|
14.
21 + 4 =
25
4
3
2
|
15.
26 – 3 =
23
4
2
3
|
16.
40 – 40 =
3
2
0
4
|
|
17.
35 + 8 =
3
43
2
4
|
18.
8 + 24 =
4
32
3
2
|
19.
15 + 28 =
4
2
3
43
|
20.
1 + 12 =
13
1
2
3
|
|
1.
50 – 10 =
3
40
4
2
|
2.
8 – 4 =
4
2
3
1
|
3.
49 – 5 =
2
44
3
4
|
4.
48 + 1 =
49
4
3
2
|
|
5.
3 + 28 =
31
2
4
3
|
6.
49 – 39 =
1
10
2
3
|
7.
36 + 5 =
2
41
3
4
|
8.
48 – 46 =
3
2
1
4
|
|
9.
25 – 11 =
14
2
3
1
|
10.
1 – 0 =
1
3
2
4
|
11.
9 + 21 =
4
30
3
2
|
12.
38 – 28 =
1
10
3
2
|
|
13.
46 – 11 =
3
4
2
35
|
14.
21 + 4 =
25
4
3
2
|
15.
26 – 3 =
23
4
2
3
|
16.
40 – 40 =
3
2
0
4
|
|
17.
35 + 8 =
3
43
2
4
|
18.
8 + 24 =
4
32
3
2
|
19.
15 + 28 =
4
2
3
43
|
20.
1 + 12 =
13
1
2
3
|