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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 460 · 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. 1.4 × 19 =
  2. 2.12 × 49 =
  3. 3.33 × 99 =
  4. 4.14 × 29 =
  5. 5.10 × 9 =
  6. 6.5 × 29 =
  7. 7.3 × 29 =
  8. 8.36 × 98 =
  9. 9.9 × 19 =
  10. 10.8 × 19 =
  11. 11.6 × 19 =
  12. 12.5 × 98 =
  13. 13.32 × 98 =
  14. 14.10 × 49 =
  15. 15.14 × 9 =
  16. 16.33 × 99 =
  17. 17.15 × 49 =
  18. 18.3 × 49 =
  19. 19.9 × 19 =
  20. 20.4 × 9 =
  21. 21.5 × 29 =
  22. 22.30 × 99 =
  23. 23.8 × 99 =
  24. 24.9 × 19 =
  25. 25.8 × 9 =
  26. 26.14 × 9 =
  27. 27.3 × 29 =
  28. 28.8 × 98 =
  29. 29.10 × 19 =
  30. 30.15 × 98 =
  31. 31.8 × 29 =
  32. 32.11 × 19 =
  33. 33.5 × 29 =
  34. 34.3 × 9 =
  35. 35.4 × 9 =
  36. 36.39 × 99 =
  37. 37.11 × 29 =
  38. 38.14 × 49 =
  39. 39.11 × 9 =
  40. 40.12 × 19 =

Answer key

  1. 76
  2. 588
  3. 3267
  4. 406
  5. 90
  6. 145
  7. 87
  8. 3528
  9. 171
  10. 152
  11. 114
  12. 490
  13. 3136
  14. 490
  15. 126
  16. 3267
  17. 735
  18. 147
  19. 171
  20. 36
  21. 145
  22. 2970
  23. 792
  24. 171
  25. 72
  26. 126
  27. 87
  28. 784
  29. 190
  30. 1470
  31. 232
  32. 209
  33. 145
  34. 27
  35. 36
  36. 3861
  37. 319
  38. 686
  39. 99
  40. 228

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