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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 440 · 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. 1.6 × 49 =
  2. 2.4 × 9 =
  3. 3.22 × 98 =
  4. 4.15 × 19 =
  5. 5.5 × 9 =
  6. 6.13 × 19 =
  7. 7.29 × 98 =
  8. 8.5 × 98 =
  9. 9.5 × 19 =
  10. 10.18 × 98 =
  11. 11.9 × 9 =
  12. 12.15 × 29 =
  13. 13.3 × 9 =
  14. 14.8 × 9 =
  15. 15.9 × 99 =
  16. 16.9 × 49 =
  17. 17.33 × 98 =
  18. 18.13 × 49 =
  19. 19.28 × 99 =
  20. 20.12 × 49 =
  21. 21.4 × 29 =
  22. 22.37 × 99 =
  23. 23.3 × 29 =
  24. 24.28 × 99 =
  25. 25.4 × 19 =
  26. 26.40 × 98 =
  27. 27.5 × 29 =
  28. 28.5 × 19 =
  29. 29.5 × 19 =
  30. 30.38 × 99 =
  31. 31.15 × 29 =
  32. 32.14 × 19 =
  33. 33.14 × 49 =
  34. 34.4 × 49 =
  35. 35.9 × 9 =
  36. 36.10 × 9 =
  37. 37.5 × 19 =
  38. 38.5 × 49 =
  39. 39.4 × 19 =
  40. 40.6 × 49 =

Answer key

  1. 294
  2. 36
  3. 2156
  4. 285
  5. 45
  6. 247
  7. 2842
  8. 490
  9. 95
  10. 1764
  11. 81
  12. 435
  13. 27
  14. 72
  15. 891
  16. 441
  17. 3234
  18. 637
  19. 2772
  20. 588
  21. 116
  22. 3663
  23. 87
  24. 2772
  25. 76
  26. 3920
  27. 145
  28. 95
  29. 95
  30. 3762
  31. 435
  32. 266
  33. 686
  34. 196
  35. 81
  36. 90
  37. 95
  38. 245
  39. 76
  40. 294

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