1.
21 – 1 =
20
2
3
4
|
2.
49 + 0 =
2
3
4
49
|
3.
16 – 6 =
1
2
3
10
|
4.
7 – 6 =
2
3
4
1
|
5.
37 + 4 =
4
2
3
41
|
6.
26 + 14 =
4
2
40
3
|
7.
42 + 6 =
3
48
4
2
|
8.
34 – 30 =
4
2
3
1
|
9.
14 + 6 =
20
4
2
3
|
10.
29 + 21 =
3
50
2
4
|
11.
20 + 7 =
4
3
2
27
|
12.
44 – 23 =
2
4
3
21
|
13.
4 + 39 =
43
3
4
2
|
14.
29 + 0 =
3
2
29
4
|
15.
19 + 27 =
2
3
4
46
|
16.
35 + 15 =
3
50
4
2
|
17.
3 – 1 =
4
1
2
3
|
18.
39 – 3 =
3
2
36
4
|
19.
49 + 1 =
4
3
2
50
|
20.
49 + 0 =
2
4
49
3
|
1.
21 – 1 =
20
2
3
4
|
2.
49 + 0 =
2
3
4
49
|
3.
16 – 6 =
1
2
3
10
|
4.
7 – 6 =
2
3
4
1
|
5.
37 + 4 =
4
2
3
41
|
6.
26 + 14 =
4
2
40
3
|
7.
42 + 6 =
3
48
4
2
|
8.
34 – 30 =
4
2
3
1
|
9.
14 + 6 =
20
4
2
3
|
10.
29 + 21 =
3
50
2
4
|
11.
20 + 7 =
4
3
2
27
|
12.
44 – 23 =
2
4
3
21
|
13.
4 + 39 =
43
3
4
2
|
14.
29 + 0 =
3
2
29
4
|
15.
19 + 27 =
2
3
4
46
|
16.
35 + 15 =
3
50
4
2
|
17.
3 – 1 =
4
1
2
3
|
18.
39 – 3 =
3
2
36
4
|
19.
49 + 1 =
4
3
2
50
|
20.
49 + 0 =
2
4
49
3
|