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