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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 589 · 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. 1.0.58 × 3.4 =
  2. 2.9.9 × 0.9 =
  3. 3.0.44 × 0.4 =
  4. 4.1.1 × 0.25 =
  5. 5.0.32 × 1.1 =
  6. 6.8.5 × 0.14 =
  7. 7.0.46 × 3.9 =
  8. 8.0.02 × 1.9 =
  9. 9.5.5 × 0.4 =
  10. 10.0.41 × 2.9 =
  11. 11.8.5 × 0.22 =
  12. 12.0.57 × 2.6 =
  13. 13.9.8 × 0.27 =
  14. 14.0.54 × 2.7 =
  15. 15.7.3 × 0.33 =
  16. 16.0.59 × 3.2 =
  17. 17.0.55 × 1.5 =
  18. 18.6.1 × 0.03 =
  19. 19.0.96 × 2.1 =
  20. 20.0.84 × 0.5 =
  21. 21.0.77 × 1.9 =
  22. 22.0.5 × 2.4 =
  23. 23.9.3 × 2.6 =
  24. 24.0.3 × 0.17 =
  25. 25.0.37 × 2.9 =
  26. 26.3.9 × 2.8 =
  27. 27.3.1 × 0.14 =
  28. 28.6.6 × 2.5 =
  29. 29.8.9 × 3.6 =
  30. 30.0.14 × 3.4 =
  31. 31.2.5 × 0.29 =
  32. 32.3.5 × 0.39 =
  33. 33.6.2 × 3.7 =
  34. 34.0.35 × 2.4 =
  35. 35.0.55 × 2.9 =
  36. 36.8.2 × 0.34 =
  37. 37.0.22 × 3.2 =
  38. 38.7.8 × 0.9 =
  39. 39.8.1 × 0.13 =
  40. 40.2.5 × 0.38 =

Answer key

  1. 1.972
  2. 8.91
  3. 0.176
  4. 0.275
  5. 0.352
  6. 1.19
  7. 1.794
  8. 0.038
  9. 2.2
  10. 1.189
  11. 1.87
  12. 1.482
  13. 2.646
  14. 1.458
  15. 2.409
  16. 1.888
  17. 0.825
  18. 0.183
  19. 2.016
  20. 0.42
  21. 1.463
  22. 1.2
  23. 24.18
  24. 0.051
  25. 1.073
  26. 10.92
  27. 0.434
  28. 16.5
  29. 32.04
  30. 0.476
  31. 0.725
  32. 1.365
  33. 22.94
  34. 0.84
  35. 1.595
  36. 2.788
  37. 0.704
  38. 7.02
  39. 1.053
  40. 0.95

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