|
1.
79 – 2 =
77
2
|
2.
47 + 23 =
70
2
|
3.
13 – 8 =
5
1
|
4.
82 – 4 =
78
2
|
|
5.
9 – 6 =
1
3
|
6.
15 – 3 =
1
12
|
7.
46 – 27 =
19
2
|
8.
90 + 7 =
2
97
|
|
9.
68 – 68 =
2
0
|
10.
91 – 55 =
36
2
|
11.
33 + 9 =
2
42
|
12.
99 – 76 =
2
23
|
|
13.
31 – 28 =
3
1
|
14.
66 + 21 =
2
87
|
15.
99 – 31 =
68
2
|
16.
22 – 2 =
20
2
|
|
17.
19 + 74 =
93
2
|
18.
43 + 15 =
58
2
|
19.
65 – 54 =
11
1
|
20.
2 – 1 =
1
2
|
|
1.
79 – 2 =
77
2
|
2.
47 + 23 =
70
2
|
3.
13 – 8 =
5
1
|
4.
82 – 4 =
78
2
|
|
5.
9 – 6 =
1
3
|
6.
15 – 3 =
1
12
|
7.
46 – 27 =
19
2
|
8.
90 + 7 =
2
97
|
|
9.
68 – 68 =
2
0
|
10.
91 – 55 =
36
2
|
11.
33 + 9 =
2
42
|
12.
99 – 76 =
2
23
|
|
13.
31 – 28 =
3
1
|
14.
66 + 21 =
2
87
|
15.
99 – 31 =
68
2
|
16.
22 – 2 =
20
2
|
|
17.
19 + 74 =
93
2
|
18.
43 + 15 =
58
2
|
19.
65 – 54 =
11
1
|
20.
2 – 1 =
1
2
|