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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 689 · 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. 1.5 × 19 =
  2. 2.27 × 98 =
  3. 3.12 × 9 =
  4. 4.12 × 49 =
  5. 5.17 × 99 =
  6. 6.10 × 19 =
  7. 7.8 × 9 =
  8. 8.4 × 9 =
  9. 9.14 × 19 =
  10. 10.31 × 98 =
  11. 11.12 × 49 =
  12. 12.17 × 99 =
  13. 13.8 × 9 =
  14. 14.7 × 49 =
  15. 15.6 × 98 =
  16. 16.37 × 99 =
  17. 17.3 × 49 =
  18. 18.4 × 49 =
  19. 19.11 × 29 =
  20. 20.10 × 29 =
  21. 21.35 × 98 =
  22. 22.6 × 49 =
  23. 23.3 × 29 =
  24. 24.13 × 29 =
  25. 25.12 × 49 =
  26. 26.9 × 9 =
  27. 27.36 × 99 =
  28. 28.11 × 19 =
  29. 29.12 × 9 =
  30. 30.19 × 98 =
  31. 31.4 × 19 =
  32. 32.4 × 9 =
  33. 33.3 × 49 =
  34. 34.10 × 19 =
  35. 35.32 × 98 =
  36. 36.5 × 19 =
  37. 37.5 × 19 =
  38. 38.4 × 98 =
  39. 39.7 × 9 =
  40. 40.12 × 29 =

Answer key

  1. 95
  2. 2646
  3. 108
  4. 588
  5. 1683
  6. 190
  7. 72
  8. 36
  9. 266
  10. 3038
  11. 588
  12. 1683
  13. 72
  14. 343
  15. 588
  16. 3663
  17. 147
  18. 196
  19. 319
  20. 290
  21. 3430
  22. 294
  23. 87
  24. 377
  25. 588
  26. 81
  27. 3564
  28. 209
  29. 108
  30. 1862
  31. 76
  32. 36
  33. 147
  34. 190
  35. 3136
  36. 95
  37. 95
  38. 392
  39. 63
  40. 348

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