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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 149 · 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 × 1.1 =
  2. 2.0.49 × 3.1 =
  3. 3.9.4 × 3.3 =
  4. 4.0.8 × 1.1 =
  5. 5.6.6 × 0.12 =
  6. 6.4.2 × 0.11 =
  7. 7.1.9 × 0.34 =
  8. 8.0.93 × 3.8 =
  9. 9.0.2 × 1.1 =
  10. 10.9.4 × 0.17 =
  11. 11.6.4 × 2.7 =
  12. 12.0.11 × 2.9 =
  13. 13.0.45 × 1.6 =
  14. 14.1.8 × 1.2 =
  15. 15.4.5 × 1.2 =
  16. 16.0.54 × 2.5 =
  17. 17.5.1 × 0.35 =
  18. 18.7.1 × 0.25 =
  19. 19.2.1 × 0.3 =
  20. 20.0.95 × 1.7 =
  21. 21.3.2 × 3.7 =
  22. 22.0.74 × 2.1 =
  23. 23.0.37 × 1.8 =
  24. 24.0.06 × 2.1 =
  25. 25.7.3 × 0.4 =
  26. 26.5.1 × 3.7 =
  27. 27.7.6 × 1.9 =
  28. 28.0.52 × 3.6 =
  29. 29.4.2 × 3.1 =
  30. 30.7.1 × 1.1 =
  31. 31.0.13 × 0.3 =
  32. 32.7.9 × 0.27 =
  33. 33.6.7 × 0.02 =
  34. 34.0.55 × 0.8 =
  35. 35.4.7 × 1.9 =
  36. 36.9.1 × 1.7 =
  37. 37.0.03 × 2.1 =
  38. 38.3.2 × 0.05 =
  39. 39.0.51 × 0.3 =
  40. 40.2.6 × 3.1 =

Answer key

  1. 4.29
  2. 1.519
  3. 31.02
  4. 0.88
  5. 0.792
  6. 0.462
  7. 0.646
  8. 3.534
  9. 0.22
  10. 1.598
  11. 17.28
  12. 0.319
  13. 0.72
  14. 2.16
  15. 5.4
  16. 1.35
  17. 1.785
  18. 1.775
  19. 0.63
  20. 1.615
  21. 11.84
  22. 1.554
  23. 0.666
  24. 0.126
  25. 2.92
  26. 18.87
  27. 14.44
  28. 1.872
  29. 13.02
  30. 7.81
  31. 0.039
  32. 2.133
  33. 0.134
  34. 0.44
  35. 8.93
  36. 15.47
  37. 0.063
  38. 0.16
  39. 0.153
  40. 8.06

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