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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 218 · 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. 1.39 × 99 =
  2. 2.6 × 98 =
  3. 3.14 × 19 =
  4. 4.17 × 98 =
  5. 5.35 × 99 =
  6. 6.8 × 49 =
  7. 7.13 × 19 =
  8. 8.13 × 19 =
  9. 9.26 × 98 =
  10. 10.13 × 9 =
  11. 11.5 × 49 =
  12. 12.3 × 9 =
  13. 13.3 × 9 =
  14. 14.6 × 9 =
  15. 15.7 × 29 =
  16. 16.7 × 19 =
  17. 17.14 × 49 =
  18. 18.5 × 29 =
  19. 19.7 × 29 =
  20. 20.4 × 9 =
  21. 21.3 × 29 =
  22. 22.3 × 19 =
  23. 23.9 × 49 =
  24. 24.35 × 99 =
  25. 25.5 × 9 =
  26. 26.20 × 99 =
  27. 27.14 × 49 =
  28. 28.8 × 29 =
  29. 29.11 × 49 =
  30. 30.8 × 49 =
  31. 31.3 × 19 =
  32. 32.15 × 29 =
  33. 33.7 × 49 =
  34. 34.40 × 98 =
  35. 35.24 × 99 =
  36. 36.7 × 49 =
  37. 37.3 × 9 =
  38. 38.14 × 19 =
  39. 39.14 × 9 =
  40. 40.15 × 29 =

Answer key

  1. 3861
  2. 588
  3. 266
  4. 1666
  5. 3465
  6. 392
  7. 247
  8. 247
  9. 2548
  10. 117
  11. 245
  12. 27
  13. 27
  14. 54
  15. 203
  16. 133
  17. 686
  18. 145
  19. 203
  20. 36
  21. 87
  22. 57
  23. 441
  24. 3465
  25. 45
  26. 1980
  27. 686
  28. 232
  29. 539
  30. 392
  31. 57
  32. 435
  33. 343
  34. 3920
  35. 2376
  36. 343
  37. 27
  38. 266
  39. 126
  40. 435

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