1.
2 + 9 =
11
2.
10 + 0 =
10
3.
10 + 0 =
10
4.
5 + 7 =
12
5.
10 + 10 =
20
6.
12 + 2 =
14
7.
11 + 5 =
16
8.
8 + 10 =
18
9.
3 + 4 =
7
10.
10 + 12 =
22
11.
12 + 10 =
22
12.
1 + 9 =
10
13.
8 + 1 =
9
14.
3 + 4 =
7
15.
5 + 3 =
8
16.
5 + 8 =
13
17.
12 + 3 =
15
18.
8 + 10 =
18
19.
4 + 1 =
5
20.
4 + 1 =
5