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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 216 · 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. 1.1.8 × 1.1 =
  2. 2.3.2 × 0.32 =
  3. 3.2.9 × 1.5 =
  4. 4.0.12 × 3.9 =
  5. 5.0.92 × 0.8 =
  6. 6.0.05 × 0.8 =
  7. 7.5.3 × 3.1 =
  8. 8.5.3 × 3.8 =
  9. 9.6.4 × 0.38 =
  10. 10.5.9 × 3.8 =
  11. 11.0.41 × 1.1 =
  12. 12.5.6 × 0.32 =
  13. 13.9.8 × 0.16 =
  14. 14.8.8 × 0.02 =
  15. 15.2.9 × 0.15 =
  16. 16.0.17 × 3.6 =
  17. 17.0.16 × 3.7 =
  18. 18.2.2 × 1.2 =
  19. 19.0.75 × 2.1 =
  20. 20.4.9 × 0.8 =
  21. 21.7.1 × 0.03 =
  22. 22.9.3 × 0.34 =
  23. 23.3.1 × 3.5 =
  24. 24.4.1 × 2.1 =
  25. 25.2.5 × 0.6 =
  26. 26.0.03 × 1.2 =
  27. 27.1.9 × 1.2 =
  28. 28.0.38 × 2.2 =
  29. 29.0.18 × 3.3 =
  30. 30.5.7 × 3.8 =
  31. 31.0.71 × 2.8 =
  32. 32.7.9 × 0.5 =
  33. 33.7.7 × 3.2 =
  34. 34.0.41 × 2.7 =
  35. 35.0.83 × 0.5 =
  36. 36.0.2 × 1.1 =
  37. 37.0.61 × 0.8 =
  38. 38.4.9 × 3.9 =
  39. 39.0.91 × 3.2 =
  40. 40.6.1 × 0.24 =

Answer key

  1. 1.98
  2. 1.024
  3. 4.35
  4. 0.468
  5. 0.736
  6. 0.04
  7. 16.43
  8. 20.14
  9. 2.432
  10. 22.42
  11. 0.451
  12. 1.792
  13. 1.568
  14. 0.176
  15. 0.435
  16. 0.612
  17. 0.592
  18. 2.64
  19. 1.575
  20. 3.92
  21. 0.213
  22. 3.162
  23. 10.85
  24. 8.61
  25. 1.5
  26. 0.036
  27. 2.28
  28. 0.836
  29. 0.594
  30. 21.66
  31. 1.988
  32. 3.95
  33. 24.64
  34. 1.107
  35. 0.415
  36. 0.22
  37. 0.488
  38. 19.11
  39. 2.912
  40. 1.464

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