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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 385 · 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. 1.4 × 98 =
  2. 2.6 × 29 =
  3. 3.39 × 99 =
  4. 4.34 × 99 =
  5. 5.9 × 99 =
  6. 6.6 × 49 =
  7. 7.10 × 29 =
  8. 8.6 × 19 =
  9. 9.38 × 98 =
  10. 10.12 × 49 =
  11. 11.6 × 9 =
  12. 12.3 × 99 =
  13. 13.10 × 19 =
  14. 14.6 × 49 =
  15. 15.13 × 9 =
  16. 16.7 × 49 =
  17. 17.10 × 19 =
  18. 18.9 × 9 =
  19. 19.8 × 19 =
  20. 20.3 × 98 =
  21. 21.14 × 29 =
  22. 22.5 × 9 =
  23. 23.10 × 19 =
  24. 24.27 × 98 =
  25. 25.10 × 98 =
  26. 26.3 × 9 =
  27. 27.12 × 29 =
  28. 28.9 × 19 =
  29. 29.4 × 9 =
  30. 30.35 × 99 =
  31. 31.10 × 19 =
  32. 32.19 × 99 =
  33. 33.15 × 19 =
  34. 34.11 × 19 =
  35. 35.36 × 99 =
  36. 36.4 × 49 =
  37. 37.11 × 19 =
  38. 38.19 × 98 =
  39. 39.5 × 29 =
  40. 40.8 × 98 =

Answer key

  1. 392
  2. 174
  3. 3861
  4. 3366
  5. 891
  6. 294
  7. 290
  8. 114
  9. 3724
  10. 588
  11. 54
  12. 297
  13. 190
  14. 294
  15. 117
  16. 343
  17. 190
  18. 81
  19. 152
  20. 294
  21. 406
  22. 45
  23. 190
  24. 2646
  25. 980
  26. 27
  27. 348
  28. 171
  29. 36
  30. 3465
  31. 190
  32. 1881
  33. 285
  34. 209
  35. 3564
  36. 196
  37. 209
  38. 1862
  39. 145
  40. 784

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