Add Three 2-Digit Numbers

Solve these mental math problems!

1) Solve
39+34+24=
2) Solve
47+21+28=
3) Solve
15+12+29=
4) Solve
38+31+24=
5) Solve
26+10+23=
6) Solve
24+40+21=
7) Solve
34+10+30=
8) Solve
45+27+10=
9) Solve
21+11+29=
10) Solve
11+26+26=
11) Solve
34+15+11=
12) Solve
48+40+15=
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