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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 528 · 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. 1.19 × 98 =
  2. 2.10 × 99 =
  3. 3.13 × 49 =
  4. 4.13 × 19 =
  5. 5.14 × 19 =
  6. 6.9 × 9 =
  7. 7.12 × 49 =
  8. 8.14 × 49 =
  9. 9.15 × 49 =
  10. 10.5 × 9 =
  11. 11.28 × 98 =
  12. 12.8 × 49 =
  13. 13.10 × 9 =
  14. 14.3 × 29 =
  15. 15.3 × 19 =
  16. 16.28 × 99 =
  17. 17.14 × 49 =
  18. 18.4 × 49 =
  19. 19.11 × 29 =
  20. 20.3 × 19 =
  21. 21.5 × 9 =
  22. 22.8 × 9 =
  23. 23.3 × 9 =
  24. 24.6 × 49 =
  25. 25.7 × 29 =
  26. 26.12 × 29 =
  27. 27.6 × 49 =
  28. 28.5 × 9 =
  29. 29.13 × 9 =
  30. 30.4 × 29 =
  31. 31.7 × 19 =
  32. 32.13 × 19 =
  33. 33.28 × 99 =
  34. 34.4 × 19 =
  35. 35.3 × 29 =
  36. 36.3 × 19 =
  37. 37.5 × 29 =
  38. 38.5 × 29 =
  39. 39.3 × 49 =
  40. 40.5 × 49 =

Answer key

  1. 1862
  2. 990
  3. 637
  4. 247
  5. 266
  6. 81
  7. 588
  8. 686
  9. 735
  10. 45
  11. 2744
  12. 392
  13. 90
  14. 87
  15. 57
  16. 2772
  17. 686
  18. 196
  19. 319
  20. 57
  21. 45
  22. 72
  23. 27
  24. 294
  25. 203
  26. 348
  27. 294
  28. 45
  29. 117
  30. 116
  31. 133
  32. 247
  33. 2772
  34. 76
  35. 87
  36. 57
  37. 145
  38. 145
  39. 147
  40. 245

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