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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 20 · 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. 1.0.84 × 2.2 =
  2. 2.1.1 × 3.8 =
  3. 3.6.5 × 3.1 =
  4. 4.0.08 × 1.8 =
  5. 5.0.67 × 1.5 =
  6. 6.5.5 × 0.29 =
  7. 7.7.6 × 0.11 =
  8. 8.0.96 × 1.2 =
  9. 9.2.1 × 2.5 =
  10. 10.0.22 × 1.2 =
  11. 11.0.96 × 1.9 =
  12. 12.0.11 × 3.2 =
  13. 13.0.52 × 1.7 =
  14. 14.7.5 × 0.9 =
  15. 15.0.4 × 1.1 =
  16. 16.0.95 × 0.8 =
  17. 17.0.94 × 1.7 =
  18. 18.9.2 × 1.4 =
  19. 19.0.04 × 0.2 =
  20. 20.0.28 × 0.8 =
  21. 21.8.1 × 1.2 =
  22. 22.0.17 × 1.2 =
  23. 23.0.31 × 1.6 =
  24. 24.6.3 × 3.4 =
  25. 25.2.7 × 0.13 =
  26. 26.2.4 × 0.05 =
  27. 27.0.89 × 1.3 =
  28. 28.0.78 × 1.8 =
  29. 29.0.79 × 2.4 =
  30. 30.0.45 × 2.1 =
  31. 31.0.44 × 0.5 =
  32. 32.0.92 × 3.1 =
  33. 33.8.1 × 0.27 =
  34. 34.8.9 × 0.29 =
  35. 35.0.97 × 2.1 =
  36. 36.0.16 × 0.8 =
  37. 37.0.02 × 2.5 =
  38. 38.8.4 × 2.6 =
  39. 39.3.7 × 0.4 =
  40. 40.6.6 × 2.7 =

Answer key

  1. 1.848
  2. 4.18
  3. 20.15
  4. 0.144
  5. 1.005
  6. 1.595
  7. 0.836
  8. 1.152
  9. 5.25
  10. 0.264
  11. 1.824
  12. 0.352
  13. 0.884
  14. 6.75
  15. 0.44
  16. 0.76
  17. 1.598
  18. 12.88
  19. 0.008
  20. 0.224
  21. 9.72
  22. 0.204
  23. 0.496
  24. 21.42
  25. 0.351
  26. 0.12
  27. 1.157
  28. 1.404
  29. 1.896
  30. 0.945
  31. 0.22
  32. 2.852
  33. 2.187
  34. 2.581
  35. 2.037
  36. 0.128
  37. 0.05
  38. 21.84
  39. 1.48
  40. 17.82

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