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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 4 · 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. 1.3.9 × 3.4 =
  2. 2.9.3 × 2.5 =
  3. 3.9.5 × 0.7 =
  4. 4.7.2 × 0.34 =
  5. 5.4.2 × 1.6 =
  6. 6.0.64 × 3.9 =
  7. 7.0.68 × 3.4 =
  8. 8.0.85 × 2.4 =
  9. 9.0.31 × 3.9 =
  10. 10.9.4 × 2.5 =
  11. 11.1.2 × 0.14 =
  12. 12.0.37 × 3.7 =
  13. 13.0.21 × 3.1 =
  14. 14.3.1 × 3.1 =
  15. 15.0.36 × 2.7 =
  16. 16.0.57 × 2.1 =
  17. 17.0.46 × 3.1 =
  18. 18.2.2 × 0.36 =
  19. 19.8.8 × 0.03 =
  20. 20.0.7 × 1.9 =
  21. 21.9.2 × 0.23 =
  22. 22.0.66 × 0.3 =
  23. 23.8.6 × 3.7 =
  24. 24.0.06 × 1.9 =
  25. 25.7.1 × 0.16 =
  26. 26.7.1 × 0.17 =
  27. 27.0.48 × 2.7 =
  28. 28.0.25 × 1.8 =
  29. 29.1.4 × 0.11 =
  30. 30.9.3 × 3.9 =
  31. 31.0.09 × 0.4 =
  32. 32.7.2 × 0.24 =
  33. 33.0.83 × 2.7 =
  34. 34.0.41 × 1.3 =
  35. 35.0.34 × 3.2 =
  36. 36.6.8 × 0.11 =
  37. 37.1.1 × 1.1 =
  38. 38.0.64 × 1.1 =
  39. 39.0.61 × 0.8 =
  40. 40.0.48 × 3.7 =

Answer key

  1. 13.26
  2. 23.25
  3. 6.65
  4. 2.448
  5. 6.72
  6. 2.496
  7. 2.312
  8. 2.04
  9. 1.209
  10. 23.5
  11. 0.168
  12. 1.369
  13. 0.651
  14. 9.61
  15. 0.972
  16. 1.197
  17. 1.426
  18. 0.792
  19. 0.264
  20. 1.33
  21. 2.116
  22. 0.198
  23. 31.82
  24. 0.114
  25. 1.136
  26. 1.207
  27. 1.296
  28. 0.45
  29. 0.154
  30. 36.27
  31. 0.036
  32. 1.728
  33. 2.241
  34. 0.533
  35. 1.088
  36. 0.748
  37. 1.21
  38. 0.704
  39. 0.488
  40. 1.776

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