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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 561 · 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. 1.12 × 29 =
  2. 2.14 × 98 =
  3. 3.6 × 9 =
  4. 4.38 × 98 =
  5. 5.8 × 19 =
  6. 6.6 × 98 =
  7. 7.10 × 98 =
  8. 8.4 × 99 =
  9. 9.11 × 99 =
  10. 10.15 × 19 =
  11. 11.8 × 29 =
  12. 12.11 × 29 =
  13. 13.8 × 19 =
  14. 14.8 × 29 =
  15. 15.40 × 98 =
  16. 16.10 × 9 =
  17. 17.3 × 19 =
  18. 18.12 × 9 =
  19. 19.3 × 98 =
  20. 20.8 × 19 =
  21. 21.3 × 9 =
  22. 22.10 × 19 =
  23. 23.4 × 19 =
  24. 24.9 × 49 =
  25. 25.9 × 19 =
  26. 26.13 × 9 =
  27. 27.26 × 99 =
  28. 28.5 × 49 =
  29. 29.5 × 49 =
  30. 30.6 × 19 =
  31. 31.4 × 29 =
  32. 32.12 × 9 =
  33. 33.6 × 49 =
  34. 34.8 × 19 =
  35. 35.13 × 29 =
  36. 36.13 × 9 =
  37. 37.15 × 19 =
  38. 38.38 × 99 =
  39. 39.14 × 19 =
  40. 40.7 × 98 =

Answer key

  1. 348
  2. 1372
  3. 54
  4. 3724
  5. 152
  6. 588
  7. 980
  8. 396
  9. 1089
  10. 285
  11. 232
  12. 319
  13. 152
  14. 232
  15. 3920
  16. 90
  17. 57
  18. 108
  19. 294
  20. 152
  21. 27
  22. 190
  23. 76
  24. 441
  25. 171
  26. 117
  27. 2574
  28. 245
  29. 245
  30. 114
  31. 116
  32. 108
  33. 294
  34. 152
  35. 377
  36. 117
  37. 285
  38. 3762
  39. 266
  40. 686

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