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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 478 · 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. 1.6.6 × 2.5 =
  2. 2.3.8 × 0.09 =
  3. 3.0.21 × 2.5 =
  4. 4.0.9 × 0.22 =
  5. 5.0.99 × 0.5 =
  6. 6.0.76 × 0.9 =
  7. 7.0.06 × 1.4 =
  8. 8.0.77 × 1.6 =
  9. 9.0.31 × 2.9 =
  10. 10.2.5 × 1.1 =
  11. 11.1.1 × 1.7 =
  12. 12.0.88 × 2.6 =
  13. 13.8.9 × 0.22 =
  14. 14.0.3 × 0.18 =
  15. 15.6.2 × 3.7 =
  16. 16.0.08 × 3.6 =
  17. 17.0.85 × 3.1 =
  18. 18.8.8 × 2.9 =
  19. 19.8.3 × 2.8 =
  20. 20.1.4 × 3.1 =
  21. 21.2.1 × 0.07 =
  22. 22.0.11 × 3.9 =
  23. 23.2.6 × 3.1 =
  24. 24.0.81 × 3.2 =
  25. 25.0.04 × 3.2 =
  26. 26.8.6 × 0.08 =
  27. 27.2.1 × 0.5 =
  28. 28.8.9 × 0.11 =
  29. 29.0.05 × 1.6 =
  30. 30.2.4 × 0.21 =
  31. 31.5.9 × 0.19 =
  32. 32.1.2 × 0.07 =
  33. 33.9.8 × 3.6 =
  34. 34.0.25 × 2.1 =
  35. 35.2.1 × 0.16 =
  36. 36.0.68 × 3.1 =
  37. 37.0.55 × 2.6 =
  38. 38.0.87 × 0.4 =
  39. 39.0.94 × 2.3 =
  40. 40.9.7 × 1.1 =

Answer key

  1. 16.5
  2. 0.342
  3. 0.525
  4. 0.198
  5. 0.495
  6. 0.684
  7. 0.084
  8. 1.232
  9. 0.899
  10. 2.75
  11. 1.87
  12. 2.288
  13. 1.958
  14. 0.054
  15. 22.94
  16. 0.288
  17. 2.635
  18. 25.52
  19. 23.24
  20. 4.34
  21. 0.147
  22. 0.429
  23. 8.06
  24. 2.592
  25. 0.128
  26. 0.688
  27. 1.05
  28. 0.979
  29. 0.08
  30. 0.504
  31. 1.121
  32. 0.084
  33. 35.28
  34. 0.525
  35. 0.336
  36. 2.108
  37. 1.43
  38. 0.348
  39. 2.162
  40. 10.67

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