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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 553 · 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. 1.4.7 × 0.7 =
  2. 2.1.7 × 0.25 =
  3. 3.2.5 × 0.32 =
  4. 4.0.72 × 0.9 =
  5. 5.0.15 × 0.8 =
  6. 6.0.74 × 1.1 =
  7. 7.0.65 × 2.7 =
  8. 8.5.4 × 0.4 =
  9. 9.0.32 × 3.4 =
  10. 10.1.7 × 2.8 =
  11. 11.7.2 × 0.18 =
  12. 12.8.8 × 0.02 =
  13. 13.0.45 × 0.6 =
  14. 14.7.6 × 0.26 =
  15. 15.0.86 × 1.3 =
  16. 16.3.1 × 2.1 =
  17. 17.6.6 × 2.1 =
  18. 18.9.3 × 3.7 =
  19. 19.9.5 × 1.9 =
  20. 20.7.3 × 3.2 =
  21. 21.0.9 × 0.22 =
  22. 22.4.9 × 2.5 =
  23. 23.6.1 × 0.11 =
  24. 24.5.7 × 0.04 =
  25. 25.0.7 × 0.6 =
  26. 26.3.7 × 0.28 =
  27. 27.0.55 × 3.1 =
  28. 28.0.25 × 3.4 =
  29. 29.0.11 × 3.5 =
  30. 30.7.1 × 0.16 =
  31. 31.2.1 × 3.3 =
  32. 32.0.63 × 0.3 =
  33. 33.1.8 × 0.07 =
  34. 34.0.28 × 1.1 =
  35. 35.0.37 × 2.7 =
  36. 36.3.5 × 0.9 =
  37. 37.0.86 × 0.8 =
  38. 38.0.43 × 1.5 =
  39. 39.0.64 × 1.3 =
  40. 40.0.85 × 2.1 =

Answer key

  1. 3.29
  2. 0.425
  3. 0.8
  4. 0.648
  5. 0.12
  6. 0.814
  7. 1.755
  8. 2.16
  9. 1.088
  10. 4.76
  11. 1.296
  12. 0.176
  13. 0.27
  14. 1.976
  15. 1.118
  16. 6.51
  17. 13.86
  18. 34.41
  19. 18.05
  20. 23.36
  21. 0.198
  22. 12.25
  23. 0.671
  24. 0.228
  25. 0.42
  26. 1.036
  27. 1.705
  28. 0.85
  29. 0.385
  30. 1.136
  31. 6.93
  32. 0.189
  33. 0.126
  34. 0.308
  35. 0.999
  36. 3.15
  37. 0.688
  38. 0.645
  39. 0.832
  40. 1.785

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