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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 314 · 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. 1.5.3 × 3.1 =
  2. 2.7.9 × 0.04 =
  3. 3.4.8 × 0.22 =
  4. 4.0.09 × 1.8 =
  5. 5.6.5 × 0.21 =
  6. 6.2.6 × 0.06 =
  7. 7.0.62 × 0.2 =
  8. 8.0.72 × 0.8 =
  9. 9.0.33 × 0.5 =
  10. 10.6.5 × 2.6 =
  11. 11.0.3 × 2.3 =
  12. 12.4.1 × 0.5 =
  13. 13.8.1 × 0.36 =
  14. 14.6.8 × 3.8 =
  15. 15.5.1 × 2.5 =
  16. 16.7.1 × 0.19 =
  17. 17.4.6 × 2.2 =
  18. 18.2.2 × 1.1 =
  19. 19.2.9 × 0.05 =
  20. 20.7.2 × 2.2 =
  21. 21.0.49 × 2.2 =
  22. 22.0.41 × 1.9 =
  23. 23.0.59 × 0.2 =
  24. 24.0.94 × 3.7 =
  25. 25.2.8 × 0.33 =
  26. 26.0.71 × 3.4 =
  27. 27.6.1 × 2.2 =
  28. 28.5.5 × 0.16 =
  29. 29.5.7 × 0.23 =
  30. 30.0.75 × 1.8 =
  31. 31.8.5 × 2.1 =
  32. 32.4.5 × 0.6 =
  33. 33.0.77 × 2.3 =
  34. 34.9.1 × 3.8 =
  35. 35.5.3 × 0.4 =
  36. 36.0.33 × 3.6 =
  37. 37.0.11 × 0.5 =
  38. 38.2.6 × 0.19 =
  39. 39.3.9 × 0.33 =
  40. 40.9.1 × 1.1 =

Answer key

  1. 16.43
  2. 0.316
  3. 1.056
  4. 0.162
  5. 1.365
  6. 0.156
  7. 0.124
  8. 0.576
  9. 0.165
  10. 16.9
  11. 0.69
  12. 2.05
  13. 2.916
  14. 25.84
  15. 12.75
  16. 1.349
  17. 10.12
  18. 2.42
  19. 0.145
  20. 15.84
  21. 1.078
  22. 0.779
  23. 0.118
  24. 3.478
  25. 0.924
  26. 2.414
  27. 13.42
  28. 0.88
  29. 1.311
  30. 1.35
  31. 17.85
  32. 2.7
  33. 1.771
  34. 34.58
  35. 2.12
  36. 1.188
  37. 0.055
  38. 0.494
  39. 1.287
  40. 10.01

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