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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 539 · 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. 1.0.11 × 0.7 =
  2. 2.0.49 × 0.5 =
  3. 3.4.2 × 1.1 =
  4. 4.5.5 × 0.4 =
  5. 5.0.6 × 0.04 =
  6. 6.3.2 × 0.8 =
  7. 7.1.7 × 0.27 =
  8. 8.0.78 × 2.6 =
  9. 9.2.4 × 3.1 =
  10. 10.9.8 × 0.05 =
  11. 11.0.58 × 0.2 =
  12. 12.8.2 × 0.5 =
  13. 13.0.72 × 2.1 =
  14. 14.1.6 × 3.2 =
  15. 15.4.6 × 0.31 =
  16. 16.6.7 × 0.26 =
  17. 17.0.71 × 2.1 =
  18. 18.0.37 × 3.3 =
  19. 19.6.8 × 2.5 =
  20. 20.0.47 × 1.6 =
  21. 21.8.3 × 0.24 =
  22. 22.7.3 × 0.5 =
  23. 23.8.3 × 0.31 =
  24. 24.1.9 × 0.28 =
  25. 25.0.31 × 0.4 =
  26. 26.9.1 × 2.8 =
  27. 27.0.35 × 3.2 =
  28. 28.1.1 × 0.08 =
  29. 29.6.4 × 0.31 =
  30. 30.3.6 × 3.5 =
  31. 31.1.2 × 0.37 =
  32. 32.0.38 × 0.3 =
  33. 33.4.1 × 1.6 =
  34. 34.0.51 × 3.1 =
  35. 35.5.2 × 0.04 =
  36. 36.0.42 × 2.5 =
  37. 37.3.2 × 0.2 =
  38. 38.8.9 × 0.35 =
  39. 39.9.8 × 2.1 =
  40. 40.5.3 × 1.6 =

Answer key

  1. 0.077
  2. 0.245
  3. 4.62
  4. 2.2
  5. 0.024
  6. 2.56
  7. 0.459
  8. 2.028
  9. 7.44
  10. 0.49
  11. 0.116
  12. 4.1
  13. 1.512
  14. 5.12
  15. 1.426
  16. 1.742
  17. 1.491
  18. 1.221
  19. 17
  20. 0.752
  21. 1.992
  22. 3.65
  23. 2.573
  24. 0.532
  25. 0.124
  26. 25.48
  27. 1.12
  28. 0.088
  29. 1.984
  30. 12.6
  31. 0.444
  32. 0.114
  33. 6.56
  34. 1.581
  35. 0.208
  36. 1.05
  37. 0.64
  38. 3.115
  39. 20.58
  40. 8.48

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