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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 619 · 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. 1.6.1 × 3.4 =
  2. 2.4.5 × 0.27 =
  3. 3.0.08 × 2.1 =
  4. 4.0.91 × 1.8 =
  5. 5.1.3 × 0.12 =
  6. 6.6.1 × 1.6 =
  7. 7.1.7 × 0.03 =
  8. 8.2.2 × 0.06 =
  9. 9.0.09 × 2.8 =
  10. 10.1.4 × 1.2 =
  11. 11.1.1 × 0.02 =
  12. 12.4.5 × 2.1 =
  13. 13.9.7 × 0.03 =
  14. 14.0.41 × 2.3 =
  15. 15.6.1 × 1.8 =
  16. 16.3.6 × 1.1 =
  17. 17.7.9 × 2.1 =
  18. 18.3.1 × 0.8 =
  19. 19.0.15 × 1.1 =
  20. 20.5.1 × 2.9 =
  21. 21.5.5 × 0.6 =
  22. 22.7.1 × 2.4 =
  23. 23.0.45 × 2.3 =
  24. 24.1.5 × 2.1 =
  25. 25.0.42 × 2.1 =
  26. 26.0.62 × 3.8 =
  27. 27.0.18 × 0.7 =
  28. 28.2.8 × 1.1 =
  29. 29.9.9 × 1.6 =
  30. 30.8.1 × 0.18 =
  31. 31.5.9 × 0.11 =
  32. 32.0.09 × 0.3 =
  33. 33.2.3 × 0.11 =
  34. 34.0.57 × 0.9 =
  35. 35.0.85 × 0.3 =
  36. 36.0.75 × 3.6 =
  37. 37.0.86 × 0.5 =
  38. 38.1.4 × 0.15 =
  39. 39.9.5 × 0.37 =
  40. 40.0.51 × 2.4 =

Answer key

  1. 20.74
  2. 1.215
  3. 0.168
  4. 1.638
  5. 0.156
  6. 9.76
  7. 0.051
  8. 0.132
  9. 0.252
  10. 1.68
  11. 0.022
  12. 9.45
  13. 0.291
  14. 0.943
  15. 10.98
  16. 3.96
  17. 16.59
  18. 2.48
  19. 0.165
  20. 14.79
  21. 3.3
  22. 17.04
  23. 1.035
  24. 3.15
  25. 0.882
  26. 2.356
  27. 0.126
  28. 3.08
  29. 15.84
  30. 1.458
  31. 0.649
  32. 0.027
  33. 0.253
  34. 0.513
  35. 0.255
  36. 2.7
  37. 0.43
  38. 0.21
  39. 3.515
  40. 1.224

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