Add Whole Tens and Hundreds

Answer Key - Grade 3 Math Worksheet

Find the sum.

1. 1.

   300 + 200 = ____

   500
2. 2.

   600 + 386 = ____

   986
3. 3.

   190 + 60 = ____

   250
4. 4.

   600 + 200 = ____

   800
5. 5.

   100 + 197 = ____

   297
6. 6.

   626 + 50 = ____

   676
7. 7.

   100 + 200 = ____

   300
8. 8.

   400 + 246 = ____

   646
9. 9.

   119 + 90 = ____

   209
10. 10.

    500 + 300 = ____

    800
11. 11.

    400 + 365 = ____

    765
12. 12.

    759 + 20 = ____

    779
13. 13.

    500 + 100 = ____

    600
14. 14.

    100 + 138 = ____

    238
15. 15.

    240 + 20 = ____

    260
16. 16.

    400 + 100 = ____

    500
17. 17.

    400 + 376 = ____

    776
18. 18.

    251 + 70 = ____

    321