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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 87 · 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. 1.0.23 × 0.9 =
  2. 2.9.8 × 3.1 =
  3. 3.4.6 × 0.13 =
  4. 4.6.2 × 1.2 =
  5. 5.0.89 × 0.5 =
  6. 6.5.5 × 3.7 =
  7. 7.0.49 × 1.1 =
  8. 8.7.2 × 0.24 =
  9. 9.3.2 × 2.1 =
  10. 10.3.3 × 1.6 =
  11. 11.0.79 × 0.8 =
  12. 12.9.2 × 2.7 =
  13. 13.4.7 × 2.9 =
  14. 14.7.1 × 1.2 =
  15. 15.0.54 × 3.6 =
  16. 16.0.29 × 2.5 =
  17. 17.2.2 × 0.31 =
  18. 18.0.22 × 1.2 =
  19. 19.9.1 × 0.08 =
  20. 20.0.18 × 1.2 =
  21. 21.9.7 × 0.11 =
  22. 22.0.7 × 0.07 =
  23. 23.0.68 × 3.8 =
  24. 24.0.55 × 1.2 =
  25. 25.0.41 × 1.1 =
  26. 26.0.55 × 2.7 =
  27. 27.0.46 × 2.3 =
  28. 28.9.4 × 0.6 =
  29. 29.0.31 × 2.8 =
  30. 30.0.17 × 1.6 =
  31. 31.3.7 × 3.4 =
  32. 32.0.12 × 0.2 =
  33. 33.0.19 × 0.5 =
  34. 34.2.2 × 2.5 =
  35. 35.1.4 × 2.3 =
  36. 36.2.8 × 2.3 =
  37. 37.0.07 × 2.4 =
  38. 38.9.6 × 0.7 =
  39. 39.0.17 × 3.5 =
  40. 40.0.6 × 0.38 =

Answer key

  1. 0.207
  2. 30.38
  3. 0.598
  4. 7.44
  5. 0.445
  6. 20.35
  7. 0.539
  8. 1.728
  9. 6.72
  10. 5.28
  11. 0.632
  12. 24.84
  13. 13.63
  14. 8.52
  15. 1.944
  16. 0.725
  17. 0.682
  18. 0.264
  19. 0.728
  20. 0.216
  21. 1.067
  22. 0.049
  23. 2.584
  24. 0.66
  25. 0.451
  26. 1.485
  27. 1.058
  28. 5.64
  29. 0.868
  30. 0.272
  31. 12.58
  32. 0.024
  33. 0.095
  34. 5.5
  35. 3.22
  36. 6.44
  37. 0.168
  38. 6.72
  39. 0.595
  40. 0.228

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