Add one 2-digit and two 1-digit numbers

Solve these mental math problems!

1) Solve
66+7+5=
2) Solve
10+7+6=
3) Solve
18+2+2=
4) Solve
84+6+7=
5) Solve
39+1+1=
6) Solve
57+2+1=
7) Solve
80+3+7=
8) Solve
49+2+3=
9) Solve
77+1+8=
10) Solve
70+7+6=
11) Solve
28+5+8=
12) Solve
85+2+1=
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