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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 83 · 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. 1.1.3 × 3.1 =
  2. 2.0.91 × 0.5 =
  3. 3.4.3 × 0.8 =
  4. 4.0.55 × 2.1 =
  5. 5.0.85 × 2.2 =
  6. 6.0.04 × 2.9 =
  7. 7.6.3 × 0.29 =
  8. 8.0.98 × 2.9 =
  9. 9.0.31 × 2.1 =
  10. 10.0.18 × 0.9 =
  11. 11.0.36 × 2.6 =
  12. 12.0.58 × 0.8 =
  13. 13.8.3 × 1.2 =
  14. 14.0.33 × 3.1 =
  15. 15.6.1 × 0.28 =
  16. 16.0.65 × 2.1 =
  17. 17.0.5 × 0.21 =
  18. 18.0.11 × 0.6 =
  19. 19.3.3 × 1.6 =
  20. 20.4.6 × 0.19 =
  21. 21.0.15 × 2.4 =
  22. 22.0.96 × 1.7 =
  23. 23.2.8 × 0.4 =
  24. 24.5.1 × 0.21 =
  25. 25.0.91 × 3.3 =
  26. 26.2.5 × 0.18 =
  27. 27.8.2 × 0.8 =
  28. 28.0.45 × 1.8 =
  29. 29.2.6 × 1.5 =
  30. 30.0.45 × 2.5 =
  31. 31.0.45 × 0.4 =
  32. 32.0.11 × 0.7 =
  33. 33.0.17 × 0.8 =
  34. 34.3.4 × 1.1 =
  35. 35.4.6 × 2.6 =
  36. 36.0.89 × 1.2 =
  37. 37.0.8 × 0.29 =
  38. 38.2.7 × 0.07 =
  39. 39.0.97 × 3.3 =
  40. 40.2.4 × 0.25 =

Answer key

  1. 4.03
  2. 0.455
  3. 3.44
  4. 1.155
  5. 1.87
  6. 0.116
  7. 1.827
  8. 2.842
  9. 0.651
  10. 0.162
  11. 0.936
  12. 0.464
  13. 9.96
  14. 1.023
  15. 1.708
  16. 1.365
  17. 0.105
  18. 0.066
  19. 5.28
  20. 0.874
  21. 0.36
  22. 1.632
  23. 1.12
  24. 1.071
  25. 3.003
  26. 0.45
  27. 6.56
  28. 0.81
  29. 3.9
  30. 1.125
  31. 0.18
  32. 0.077
  33. 0.136
  34. 3.74
  35. 11.96
  36. 1.068
  37. 0.232
  38. 0.189
  39. 3.201
  40. 0.6

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