1.
11 – 9 =
2
1
|
2.
26 – 4 =
2
22
|
3.
25 – 13 =
1
12
|
4.
87 – 43 =
2
44
|
5.
43 + 43 =
86
2
|
6.
72 + 25 =
2
97
|
7.
61 + 13 =
2
74
|
8.
25 + 53 =
2
78
|
9.
2 – 1 =
2
1
|
10.
30 – 28 =
1
2
|
11.
68 + 23 =
2
91
|
12.
84 – 64 =
2
20
|
13.
15 + 48 =
2
63
|
14.
83 – 20 =
2
63
|
15.
43 + 33 =
2
76
|
16.
32 + 1 =
33
2
|
17.
35 – 5 =
30
2
|
18.
38 + 47 =
2
85
|
19.
32 + 57 =
89
2
|
20.
18 – 18 =
2
0
|
1.
11 – 9 =
2
1
|
2.
26 – 4 =
2
22
|
3.
25 – 13 =
1
12
|
4.
87 – 43 =
2
44
|
5.
43 + 43 =
86
2
|
6.
72 + 25 =
2
97
|
7.
61 + 13 =
2
74
|
8.
25 + 53 =
2
78
|
9.
2 – 1 =
2
1
|
10.
30 – 28 =
1
2
|
11.
68 + 23 =
2
91
|
12.
84 – 64 =
2
20
|
13.
15 + 48 =
2
63
|
14.
83 – 20 =
2
63
|
15.
43 + 33 =
2
76
|
16.
32 + 1 =
33
2
|
17.
35 – 5 =
30
2
|
18.
38 + 47 =
2
85
|
19.
32 + 57 =
89
2
|
20.
18 – 18 =
2
0
|