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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 439 · 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. 1.6.5 × 0.8 =
  2. 2.2.5 × 1.6 =
  3. 3.5.3 × 2.9 =
  4. 4.1.2 × 0.04 =
  5. 5.5.6 × 0.07 =
  6. 6.5.8 × 0.05 =
  7. 7.6.2 × 0.28 =
  8. 8.2.9 × 0.02 =
  9. 9.7.3 × 0.02 =
  10. 10.0.54 × 2.9 =
  11. 11.0.07 × 2.1 =
  12. 12.4.4 × 0.23 =
  13. 13.0.22 × 0.9 =
  14. 14.0.25 × 2.1 =
  15. 15.0.21 × 3.8 =
  16. 16.5.8 × 2.9 =
  17. 17.0.25 × 3.1 =
  18. 18.3.1 × 0.4 =
  19. 19.9.2 × 0.12 =
  20. 20.0.67 × 3.3 =
  21. 21.8.5 × 1.5 =
  22. 22.5.3 × 1.1 =
  23. 23.0.84 × 1.3 =
  24. 24.0.88 × 1.4 =
  25. 25.0.74 × 2.7 =
  26. 26.4.2 × 0.25 =
  27. 27.0.3 × 0.39 =
  28. 28.0.88 × 1.6 =
  29. 29.0.97 × 2.2 =
  30. 30.0.25 × 2.3 =
  31. 31.0.81 × 2.5 =
  32. 32.3.3 × 0.17 =
  33. 33.7.5 × 0.26 =
  34. 34.1.9 × 2.7 =
  35. 35.8.6 × 3.3 =
  36. 36.9.7 × 2.4 =
  37. 37.0.45 × 2.7 =
  38. 38.7.9 × 3.9 =
  39. 39.0.85 × 1.2 =
  40. 40.3.1 × 3.1 =

Answer key

  1. 5.2
  2. 4
  3. 15.37
  4. 0.048
  5. 0.392
  6. 0.29
  7. 1.736
  8. 0.058
  9. 0.146
  10. 1.566
  11. 0.147
  12. 1.012
  13. 0.198
  14. 0.525
  15. 0.798
  16. 16.82
  17. 0.775
  18. 1.24
  19. 1.104
  20. 2.211
  21. 12.75
  22. 5.83
  23. 1.092
  24. 1.232
  25. 1.998
  26. 1.05
  27. 0.117
  28. 1.408
  29. 2.134
  30. 0.575
  31. 2.025
  32. 0.561
  33. 1.95
  34. 5.13
  35. 28.38
  36. 23.28
  37. 1.215
  38. 30.81
  39. 1.02
  40. 9.61

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