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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 931 · 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 × 19 =
  2. 2.3 × 9 =
  3. 3.17 × 99 =
  4. 4.39 × 99 =
  5. 5.25 × 98 =
  6. 6.10 × 19 =
  7. 7.11 × 9 =
  8. 8.5 × 49 =
  9. 9.8 × 99 =
  10. 10.17 × 98 =
  11. 11.4 × 9 =
  12. 12.5 × 29 =
  13. 13.4 × 29 =
  14. 14.13 × 9 =
  15. 15.12 × 29 =
  16. 16.14 × 9 =
  17. 17.8 × 49 =
  18. 18.18 × 99 =
  19. 19.3 × 29 =
  20. 20.12 × 9 =
  21. 21.6 × 49 =
  22. 22.6 × 9 =
  23. 23.5 × 99 =
  24. 24.7 × 49 =
  25. 25.13 × 19 =
  26. 26.29 × 98 =
  27. 27.4 × 19 =
  28. 28.6 × 29 =
  29. 29.12 × 9 =
  30. 30.5 × 19 =
  31. 31.3 × 19 =
  32. 32.6 × 49 =
  33. 33.13 × 9 =
  34. 34.14 × 49 =
  35. 35.3 × 9 =
  36. 36.12 × 29 =
  37. 37.18 × 99 =
  38. 38.12 × 29 =
  39. 39.15 × 49 =
  40. 40.4 × 19 =

Answer key

  1. 76
  2. 27
  3. 1683
  4. 3861
  5. 2450
  6. 190
  7. 99
  8. 245
  9. 792
  10. 1666
  11. 36
  12. 145
  13. 116
  14. 117
  15. 348
  16. 126
  17. 392
  18. 1782
  19. 87
  20. 108
  21. 294
  22. 54
  23. 495
  24. 343
  25. 247
  26. 2842
  27. 76
  28. 174
  29. 108
  30. 95
  31. 57
  32. 294
  33. 117
  34. 686
  35. 27
  36. 348
  37. 1782
  38. 348
  39. 735
  40. 76

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