|
1.
1 – 1 =
2
0
|
2.
11 + 6 =
2
17
|
3.
20 – 4 =
16
2
|
4.
5 – 5 =
2
0
|
|
5.
8 + 1 =
1
9
|
6.
14 + 2 =
2
16
|
7.
16 – 5 =
1
11
|
8.
18 – 13 =
1
5
|
|
9.
2 + 2 =
1
4
|
10.
10 + 1 =
11
1
|
11.
12 + 2 =
1
14
|
12.
8 + 11 =
2
19
|
|
13.
18 – 16 =
2
1
|
14.
7 + 10 =
2
17
|
15.
18 + 2 =
20
2
|
16.
18 – 8 =
10
1
|
|
17.
15 + 4 =
19
2
|
18.
10 + 4 =
14
1
|
19.
7 – 0 =
7
1
|
20.
14 + 3 =
17
2
|
|
1.
1 – 1 =
2
0
|
2.
11 + 6 =
2
17
|
3.
20 – 4 =
16
2
|
4.
5 – 5 =
2
0
|
|
5.
8 + 1 =
1
9
|
6.
14 + 2 =
2
16
|
7.
16 – 5 =
1
11
|
8.
18 – 13 =
1
5
|
|
9.
2 + 2 =
1
4
|
10.
10 + 1 =
11
1
|
11.
12 + 2 =
1
14
|
12.
8 + 11 =
2
19
|
|
13.
18 – 16 =
2
1
|
14.
7 + 10 =
2
17
|
15.
18 + 2 =
20
2
|
16.
18 – 8 =
10
1
|
|
17.
15 + 4 =
19
2
|
18.
10 + 4 =
14
1
|
19.
7 – 0 =
7
1
|
20.
14 + 3 =
17
2
|