Adding Whole Tens & Hundreds

Solve the addition problems below.

1) Solve
20+10=
2) Solve
80+20=
3) Solve
80+20=
4) Solve
10+50=
5) Solve
80+90=
6) Solve
50+40=
7) Solve
10+80=
8) Solve
50+50=
9) Solve
60+60=
10) Solve
10+10=
11) Solve
60+90=
12) Solve
80+30=
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