Missing Addends (Fill in the Gap)

Solve the addition problems below.

1) Solve
15+_=
2) Solve
18+_=
3) Solve
37+_=
4) Solve
34+_=
5) Solve
38+_=
6) Solve
16+_=
7) Solve
35+_=
8) Solve
29+_=
9) Solve
37+_=
10) Solve
28+_=
11) Solve
21+_=
12) Solve
18+_=
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