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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 98 · 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. 1.3.5 × 2.8 =
  2. 2.7.8 × 0.2 =
  3. 3.0.15 × 2.3 =
  4. 4.5.7 × 0.06 =
  5. 5.8.4 × 1.7 =
  6. 6.0.27 × 3.6 =
  7. 7.0.71 × 2.9 =
  8. 8.0.93 × 3.9 =
  9. 9.3.9 × 0.2 =
  10. 10.2.9 × 1.3 =
  11. 11.0.82 × 1.1 =
  12. 12.0.88 × 1.7 =
  13. 13.4.6 × 3.8 =
  14. 14.0.2 × 0.38 =
  15. 15.6.3 × 3.7 =
  16. 16.0.46 × 0.7 =
  17. 17.2.3 × 0.14 =
  18. 18.2.8 × 2.9 =
  19. 19.4.2 × 0.37 =
  20. 20.0.47 × 1.3 =
  21. 21.5.9 × 2.6 =
  22. 22.2.8 × 3.2 =
  23. 23.0.98 × 1.1 =
  24. 24.0.87 × 0.2 =
  25. 25.9.4 × 1.6 =
  26. 26.0.45 × 1.6 =
  27. 27.6.1 × 1.1 =
  28. 28.1.1 × 1.1 =
  29. 29.1.4 × 0.27 =
  30. 30.0.9 × 0.19 =
  31. 31.0.87 × 0.4 =
  32. 32.9.8 × 0.08 =
  33. 33.5.7 × 0.11 =
  34. 34.0.8 × 0.28 =
  35. 35.2.5 × 0.11 =
  36. 36.0.51 × 2.9 =
  37. 37.8.6 × 1.1 =
  38. 38.0.53 × 3.7 =
  39. 39.0.82 × 1.2 =
  40. 40.0.7 × 0.35 =

Answer key

  1. 9.8
  2. 1.56
  3. 0.345
  4. 0.342
  5. 14.28
  6. 0.972
  7. 2.059
  8. 3.627
  9. 0.78
  10. 3.77
  11. 0.902
  12. 1.496
  13. 17.48
  14. 0.076
  15. 23.31
  16. 0.322
  17. 0.322
  18. 8.12
  19. 1.554
  20. 0.611
  21. 15.34
  22. 8.96
  23. 1.078
  24. 0.174
  25. 15.04
  26. 0.72
  27. 6.71
  28. 1.21
  29. 0.378
  30. 0.171
  31. 0.348
  32. 0.784
  33. 0.627
  34. 0.224
  35. 0.275
  36. 1.479
  37. 9.46
  38. 1.961
  39. 0.984
  40. 0.245

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