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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 697 · 40 questions
TalentJR

How it works (Round and adjust): Round up: 49 is 50 − 1, 98 is 100 − 2. Multiply by the round number. Take away the number times the bit you added.

NameDateTime takenScore ___ / 40
  1. 1.14 × 9 =
  2. 2.3 × 19 =
  3. 3.11 × 19 =
  4. 4.4 × 49 =
  5. 5.12 × 9 =
  6. 6.12 × 29 =
  7. 7.15 × 9 =
  8. 8.34 × 99 =
  9. 9.4 × 29 =
  10. 10.8 × 9 =
  11. 11.12 × 49 =
  12. 12.24 × 99 =
  13. 13.4 × 49 =
  14. 14.5 × 49 =
  15. 15.19 × 98 =
  16. 16.10 × 9 =
  17. 17.6 × 99 =
  18. 18.10 × 98 =
  19. 19.16 × 99 =
  20. 20.9 × 49 =
  21. 21.5 × 49 =
  22. 22.38 × 99 =
  23. 23.6 × 9 =
  24. 24.13 × 99 =
  25. 25.7 × 19 =
  26. 26.7 × 49 =
  27. 27.6 × 19 =
  28. 28.4 × 49 =
  29. 29.9 × 49 =
  30. 30.31 × 98 =
  31. 31.19 × 98 =
  32. 32.12 × 99 =
  33. 33.11 × 9 =
  34. 34.15 × 49 =
  35. 35.4 × 29 =
  36. 36.5 × 49 =
  37. 37.19 × 99 =
  38. 38.8 × 19 =
  39. 39.9 × 19 =
  40. 40.11 × 99 =

Answer key

  1. 126
  2. 57
  3. 209
  4. 196
  5. 108
  6. 348
  7. 135
  8. 3366
  9. 116
  10. 72
  11. 588
  12. 2376
  13. 196
  14. 245
  15. 1862
  16. 90
  17. 594
  18. 980
  19. 1584
  20. 441
  21. 245
  22. 3762
  23. 54
  24. 1287
  25. 133
  26. 343
  27. 114
  28. 196
  29. 441
  30. 3038
  31. 1862
  32. 1188
  33. 99
  34. 735
  35. 116
  36. 245
  37. 1881
  38. 152
  39. 171
  40. 1089

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