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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 881 · 40 questions
TalentJR

The fast method (Count the places): Forget the points and multiply the whole numbers: 2.5 × 1.4 → 25 × 14 = 350. Count the decimal places in both numbers: 1 + 1 = 2. Put the point that many places from the right: 3.50 — then drop the 0 at the end: 3.5.

NameDateTime takenScore ___ / 40
  1. 1.9.9 × 1.6 =
  2. 2.0.87 × 1.1 =
  3. 3.0.98 × 0.6 =
  4. 4.0.61 × 2.1 =
  5. 5.0.34 × 3.5 =
  6. 6.6.1 × 3.6 =
  7. 7.0.11 × 0.6 =
  8. 8.0.84 × 1.2 =
  9. 9.8.7 × 3.4 =
  10. 10.2.6 × 0.8 =
  11. 11.2.6 × 0.7 =
  12. 12.0.25 × 3.1 =
  13. 13.4.1 × 1.3 =
  14. 14.0.37 × 1.4 =
  15. 15.4.5 × 0.08 =
  16. 16.7.1 × 0.34 =
  17. 17.1.9 × 1.1 =
  18. 18.3.1 × 3.2 =
  19. 19.3.3 × 3.4 =
  20. 20.7.8 × 1.2 =
  21. 21.0.75 × 2.7 =
  22. 22.4.6 × 2.2 =
  23. 23.0.9 × 0.08 =
  24. 24.0.49 × 1.3 =
  25. 25.0.12 × 0.9 =
  26. 26.0.86 × 2.1 =
  27. 27.0.83 × 2.1 =
  28. 28.0.88 × 0.2 =
  29. 29.0.77 × 2.1 =
  30. 30.0.59 × 0.9 =
  31. 31.0.7 × 1.1 =
  32. 32.1.1 × 0.17 =
  33. 33.0.59 × 0.2 =
  34. 34.0.41 × 0.8 =
  35. 35.1.2 × 0.03 =
  36. 36.0.89 × 3.1 =
  37. 37.2.8 × 2.5 =
  38. 38.5.8 × 1.1 =
  39. 39.0.19 × 3.5 =
  40. 40.1.6 × 2.5 =

Answer key

  1. 15.84
  2. 0.957
  3. 0.588
  4. 1.281
  5. 1.19
  6. 21.96
  7. 0.066
  8. 1.008
  9. 29.58
  10. 2.08
  11. 1.82
  12. 0.775
  13. 5.33
  14. 0.518
  15. 0.36
  16. 2.414
  17. 2.09
  18. 9.92
  19. 11.22
  20. 9.36
  21. 2.025
  22. 10.12
  23. 0.072
  24. 0.637
  25. 0.108
  26. 1.806
  27. 1.743
  28. 0.176
  29. 1.617
  30. 0.531
  31. 0.77
  32. 0.187
  33. 0.118
  34. 0.328
  35. 0.036
  36. 2.759
  37. 7
  38. 6.38
  39. 0.665
  40. 4

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