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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 390 · 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. 1.0.8 × 0.08 =
  2. 2.9.1 × 0.2 =
  3. 3.2.1 × 0.24 =
  4. 4.0.45 × 3.9 =
  5. 5.9.1 × 2.9 =
  6. 6.9.3 × 0.09 =
  7. 7.0.24 × 1.5 =
  8. 8.2.3 × 0.19 =
  9. 9.0.62 × 0.7 =
  10. 10.0.52 × 3.1 =
  11. 11.0.91 × 3.3 =
  12. 12.0.07 × 3.5 =
  13. 13.2.7 × 0.05 =
  14. 14.0.94 × 1.2 =
  15. 15.0.18 × 1.9 =
  16. 16.7.1 × 0.8 =
  17. 17.0.55 × 0.3 =
  18. 18.0.04 × 3.5 =
  19. 19.2.1 × 0.27 =
  20. 20.0.29 × 0.3 =
  21. 21.6.5 × 2.7 =
  22. 22.0.12 × 0.8 =
  23. 23.0.65 × 0.3 =
  24. 24.0.65 × 1.7 =
  25. 25.0.45 × 3.1 =
  26. 26.6.5 × 0.09 =
  27. 27.0.11 × 2.8 =
  28. 28.0.21 × 1.7 =
  29. 29.7.1 × 0.07 =
  30. 30.0.15 × 0.5 =
  31. 31.0.89 × 1.5 =
  32. 32.6.1 × 3.5 =
  33. 33.0.36 × 0.4 =
  34. 34.0.96 × 0.8 =
  35. 35.0.19 × 1.1 =
  36. 36.0.67 × 0.9 =
  37. 37.2.6 × 0.5 =
  38. 38.8.7 × 1.1 =
  39. 39.1.6 × 0.24 =
  40. 40.6.7 × 2.6 =

Answer key

  1. 0.064
  2. 1.82
  3. 0.504
  4. 1.755
  5. 26.39
  6. 0.837
  7. 0.36
  8. 0.437
  9. 0.434
  10. 1.612
  11. 3.003
  12. 0.245
  13. 0.135
  14. 1.128
  15. 0.342
  16. 5.68
  17. 0.165
  18. 0.14
  19. 0.567
  20. 0.087
  21. 17.55
  22. 0.096
  23. 0.195
  24. 1.105
  25. 1.395
  26. 0.585
  27. 0.308
  28. 0.357
  29. 0.497
  30. 0.075
  31. 1.335
  32. 21.35
  33. 0.144
  34. 0.768
  35. 0.209
  36. 0.603
  37. 1.3
  38. 9.57
  39. 0.384
  40. 17.42

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