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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 278 · 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. 1.14 × 9 =
  2. 2.33 × 99 =
  3. 3.20 × 99 =
  4. 4.6 × 9 =
  5. 5.37 × 99 =
  6. 6.12 × 9 =
  7. 7.36 × 99 =
  8. 8.15 × 9 =
  9. 9.12 × 9 =
  10. 10.24 × 98 =
  11. 11.3 × 19 =
  12. 12.12 × 29 =
  13. 13.25 × 98 =
  14. 14.13 × 19 =
  15. 15.4 × 98 =
  16. 16.7 × 19 =
  17. 17.12 × 9 =
  18. 18.3 × 19 =
  19. 19.4 × 9 =
  20. 20.10 × 19 =
  21. 21.26 × 98 =
  22. 22.9 × 49 =
  23. 23.26 × 98 =
  24. 24.10 × 9 =
  25. 25.39 × 99 =
  26. 26.15 × 99 =
  27. 27.6 × 9 =
  28. 28.8 × 99 =
  29. 29.5 × 9 =
  30. 30.12 × 19 =
  31. 31.28 × 99 =
  32. 32.8 × 98 =
  33. 33.33 × 99 =
  34. 34.9 × 9 =
  35. 35.4 × 19 =
  36. 36.9 × 19 =
  37. 37.12 × 19 =
  38. 38.10 × 98 =
  39. 39.28 × 98 =
  40. 40.37 × 99 =

Answer key

  1. 126
  2. 3267
  3. 1980
  4. 54
  5. 3663
  6. 108
  7. 3564
  8. 135
  9. 108
  10. 2352
  11. 57
  12. 348
  13. 2450
  14. 247
  15. 392
  16. 133
  17. 108
  18. 57
  19. 36
  20. 190
  21. 2548
  22. 441
  23. 2548
  24. 90
  25. 3861
  26. 1485
  27. 54
  28. 792
  29. 45
  30. 228
  31. 2772
  32. 784
  33. 3267
  34. 81
  35. 76
  36. 171
  37. 228
  38. 980
  39. 2744
  40. 3663

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