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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 638 · 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. 1.5.1 × 1.3 =
  2. 2.0.99 × 3.1 =
  3. 3.7.5 × 0.15 =
  4. 4.0.02 × 0.5 =
  5. 5.0.35 × 3.4 =
  6. 6.8.2 × 0.31 =
  7. 7.8.5 × 2.6 =
  8. 8.0.63 × 0.4 =
  9. 9.8.2 × 0.11 =
  10. 10.6.5 × 2.3 =
  11. 11.0.08 × 1.3 =
  12. 12.8.3 × 0.31 =
  13. 13.0.5 × 0.3 =
  14. 14.7.6 × 1.2 =
  15. 15.3.9 × 1.1 =
  16. 16.4.1 × 0.04 =
  17. 17.6.2 × 0.14 =
  18. 18.0.43 × 1.2 =
  19. 19.2.2 × 0.31 =
  20. 20.6.4 × 3.7 =
  21. 21.4.5 × 2.8 =
  22. 22.0.23 × 3.5 =
  23. 23.0.48 × 0.9 =
  24. 24.2.6 × 0.5 =
  25. 25.0.02 × 2.1 =
  26. 26.3.9 × 2.6 =
  27. 27.0.11 × 1.6 =
  28. 28.0.06 × 1.4 =
  29. 29.0.89 × 1.1 =
  30. 30.0.06 × 3.2 =
  31. 31.0.86 × 0.9 =
  32. 32.0.45 × 3.2 =
  33. 33.5.1 × 0.5 =
  34. 34.4.8 × 1.5 =
  35. 35.0.37 × 1.1 =
  36. 36.8.4 × 2.8 =
  37. 37.0.52 × 3.3 =
  38. 38.0.39 × 3.4 =
  39. 39.6.7 × 3.1 =
  40. 40.0.69 × 3.9 =

Answer key

  1. 6.63
  2. 3.069
  3. 1.125
  4. 0.01
  5. 1.19
  6. 2.542
  7. 22.1
  8. 0.252
  9. 0.902
  10. 14.95
  11. 0.104
  12. 2.573
  13. 0.15
  14. 9.12
  15. 4.29
  16. 0.164
  17. 0.868
  18. 0.516
  19. 0.682
  20. 23.68
  21. 12.6
  22. 0.805
  23. 0.432
  24. 1.3
  25. 0.042
  26. 10.14
  27. 0.176
  28. 0.084
  29. 0.979
  30. 0.192
  31. 0.774
  32. 1.44
  33. 2.55
  34. 7.2
  35. 0.407
  36. 23.52
  37. 1.716
  38. 1.326
  39. 20.77
  40. 2.691

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