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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 762 · 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. 1.11 × 98 =
  2. 2.5 × 19 =
  3. 3.18 × 98 =
  4. 4.32 × 98 =
  5. 5.10 × 19 =
  6. 6.24 × 98 =
  7. 7.5 × 9 =
  8. 8.12 × 49 =
  9. 9.38 × 99 =
  10. 10.13 × 29 =
  11. 11.7 × 19 =
  12. 12.3 × 9 =
  13. 13.11 × 98 =
  14. 14.12 × 29 =
  15. 15.4 × 9 =
  16. 16.23 × 98 =
  17. 17.12 × 29 =
  18. 18.8 × 19 =
  19. 19.3 × 49 =
  20. 20.3 × 29 =
  21. 21.10 × 49 =
  22. 22.13 × 49 =
  23. 23.4 × 19 =
  24. 24.12 × 19 =
  25. 25.14 × 98 =
  26. 26.13 × 49 =
  27. 27.4 × 19 =
  28. 28.15 × 9 =
  29. 29.8 × 99 =
  30. 30.11 × 9 =
  31. 31.6 × 99 =
  32. 32.10 × 98 =
  33. 33.5 × 99 =
  34. 34.3 × 49 =
  35. 35.26 × 99 =
  36. 36.5 × 9 =
  37. 37.38 × 98 =
  38. 38.6 × 49 =
  39. 39.15 × 9 =
  40. 40.8 × 29 =

Answer key

  1. 1078
  2. 95
  3. 1764
  4. 3136
  5. 190
  6. 2352
  7. 45
  8. 588
  9. 3762
  10. 377
  11. 133
  12. 27
  13. 1078
  14. 348
  15. 36
  16. 2254
  17. 348
  18. 152
  19. 147
  20. 87
  21. 490
  22. 637
  23. 76
  24. 228
  25. 1372
  26. 637
  27. 76
  28. 135
  29. 792
  30. 99
  31. 594
  32. 980
  33. 495
  34. 147
  35. 2574
  36. 45
  37. 3724
  38. 294
  39. 135
  40. 232

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