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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 199 · 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. 1.3 × 9 =
  2. 2.17 × 99 =
  3. 3.38 × 98 =
  4. 4.24 × 99 =
  5. 5.3 × 29 =
  6. 6.39 × 98 =
  7. 7.11 × 9 =
  8. 8.8 × 19 =
  9. 9.8 × 29 =
  10. 10.7 × 19 =
  11. 11.8 × 99 =
  12. 12.3 × 49 =
  13. 13.10 × 19 =
  14. 14.6 × 49 =
  15. 15.9 × 49 =
  16. 16.9 × 19 =
  17. 17.33 × 99 =
  18. 18.5 × 19 =
  19. 19.23 × 99 =
  20. 20.3 × 49 =
  21. 21.14 × 98 =
  22. 22.6 × 9 =
  23. 23.13 × 9 =
  24. 24.12 × 99 =
  25. 25.13 × 49 =
  26. 26.12 × 9 =
  27. 27.3 × 9 =
  28. 28.10 × 9 =
  29. 29.15 × 49 =
  30. 30.14 × 9 =
  31. 31.15 × 99 =
  32. 32.12 × 9 =
  33. 33.6 × 19 =
  34. 34.6 × 9 =
  35. 35.38 × 98 =
  36. 36.9 × 49 =
  37. 37.10 × 29 =
  38. 38.7 × 29 =
  39. 39.32 × 98 =
  40. 40.7 × 19 =

Answer key

  1. 27
  2. 1683
  3. 3724
  4. 2376
  5. 87
  6. 3822
  7. 99
  8. 152
  9. 232
  10. 133
  11. 792
  12. 147
  13. 190
  14. 294
  15. 441
  16. 171
  17. 3267
  18. 95
  19. 2277
  20. 147
  21. 1372
  22. 54
  23. 117
  24. 1188
  25. 637
  26. 108
  27. 27
  28. 90
  29. 735
  30. 126
  31. 1485
  32. 108
  33. 114
  34. 54
  35. 3724
  36. 441
  37. 290
  38. 203
  39. 3136
  40. 133

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