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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 256 · 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. 1.0.74 × 3.3 =
  2. 2.0.63 × 2.3 =
  3. 3.0.11 × 0.7 =
  4. 4.6.9 × 2.1 =
  5. 5.6.4 × 0.22 =
  6. 6.0.06 × 0.8 =
  7. 7.9.6 × 0.32 =
  8. 8.0.15 × 0.6 =
  9. 9.5.4 × 1.8 =
  10. 10.0.08 × 2.3 =
  11. 11.0.8 × 0.07 =
  12. 12.0.3 × 0.3 =
  13. 13.0.02 × 3.1 =
  14. 14.2.1 × 0.19 =
  15. 15.0.8 × 0.16 =
  16. 16.0.24 × 3.4 =
  17. 17.0.55 × 0.4 =
  18. 18.0.26 × 2.6 =
  19. 19.4.9 × 0.7 =
  20. 20.5.1 × 1.1 =
  21. 21.8.1 × 1.3 =
  22. 22.4.4 × 0.22 =
  23. 23.9.4 × 0.2 =
  24. 24.0.71 × 3.4 =
  25. 25.0.31 × 1.5 =
  26. 26.1.3 × 0.13 =
  27. 27.0.56 × 2.3 =
  28. 28.7.3 × 0.31 =
  29. 29.2.4 × 0.2 =
  30. 30.0.88 × 1.6 =
  31. 31.7.5 × 0.05 =
  32. 32.0.23 × 2.8 =
  33. 33.0.89 × 0.6 =
  34. 34.0.6 × 1.8 =
  35. 35.0.74 × 3.1 =
  36. 36.4.7 × 0.11 =
  37. 37.4.5 × 3.6 =
  38. 38.1.5 × 0.5 =
  39. 39.0.85 × 3.2 =
  40. 40.9.4 × 0.06 =

Answer key

  1. 2.442
  2. 1.449
  3. 0.077
  4. 14.49
  5. 1.408
  6. 0.048
  7. 3.072
  8. 0.09
  9. 9.72
  10. 0.184
  11. 0.056
  12. 0.09
  13. 0.062
  14. 0.399
  15. 0.128
  16. 0.816
  17. 0.22
  18. 0.676
  19. 3.43
  20. 5.61
  21. 10.53
  22. 0.968
  23. 1.88
  24. 2.414
  25. 0.465
  26. 0.169
  27. 1.288
  28. 2.263
  29. 0.48
  30. 1.408
  31. 0.375
  32. 0.644
  33. 0.534
  34. 1.08
  35. 2.294
  36. 0.517
  37. 16.2
  38. 0.75
  39. 2.72
  40. 0.564

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