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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 42 · 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. 1.0.7 × 1.1 =
  2. 2.0.77 × 2.9 =
  3. 3.0.77 × 3.3 =
  4. 4.0.56 × 2.4 =
  5. 5.0.91 × 3.1 =
  6. 6.8.9 × 0.17 =
  7. 7.7.4 × 0.38 =
  8. 8.2.7 × 1.1 =
  9. 9.3.4 × 1.8 =
  10. 10.2.2 × 1.6 =
  11. 11.8.9 × 0.15 =
  12. 12.0.36 × 2.1 =
  13. 13.0.95 × 0.7 =
  14. 14.0.91 × 3.3 =
  15. 15.0.37 × 0.9 =
  16. 16.0.33 × 3.3 =
  17. 17.1.6 × 0.02 =
  18. 18.0.51 × 0.5 =
  19. 19.7.2 × 1.5 =
  20. 20.0.31 × 1.8 =
  21. 21.2.5 × 3.8 =
  22. 22.0.39 × 2.8 =
  23. 23.0.89 × 2.6 =
  24. 24.0.27 × 3.1 =
  25. 25.2.6 × 0.31 =
  26. 26.0.7 × 0.11 =
  27. 27.2.5 × 1.4 =
  28. 28.0.44 × 0.6 =
  29. 29.0.25 × 0.5 =
  30. 30.1.7 × 0.19 =
  31. 31.8.9 × 0.05 =
  32. 32.0.81 × 0.5 =
  33. 33.5.3 × 0.31 =
  34. 34.0.66 × 0.8 =
  35. 35.9.8 × 0.24 =
  36. 36.0.16 × 0.2 =
  37. 37.0.33 × 3.8 =
  38. 38.0.04 × 3.1 =
  39. 39.3.5 × 3.9 =
  40. 40.0.11 × 2.8 =

Answer key

  1. 0.77
  2. 2.233
  3. 2.541
  4. 1.344
  5. 2.821
  6. 1.513
  7. 2.812
  8. 2.97
  9. 6.12
  10. 3.52
  11. 1.335
  12. 0.756
  13. 0.665
  14. 3.003
  15. 0.333
  16. 1.089
  17. 0.032
  18. 0.255
  19. 10.8
  20. 0.558
  21. 9.5
  22. 1.092
  23. 2.314
  24. 0.837
  25. 0.806
  26. 0.077
  27. 3.5
  28. 0.264
  29. 0.125
  30. 0.323
  31. 0.445
  32. 0.405
  33. 1.643
  34. 0.528
  35. 2.352
  36. 0.032
  37. 1.254
  38. 0.124
  39. 13.65
  40. 0.308

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