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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 156 · 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. 1.7.8 × 0.4 =
  2. 2.0.81 × 1.9 =
  3. 3.1.9 × 2.1 =
  4. 4.0.51 × 2.7 =
  5. 5.5.6 × 0.27 =
  6. 6.0.11 × 3.8 =
  7. 7.0.67 × 3.3 =
  8. 8.0.26 × 3.8 =
  9. 9.0.85 × 0.9 =
  10. 10.0.23 × 2.1 =
  11. 11.1.1 × 1.8 =
  12. 12.4.5 × 3.2 =
  13. 13.8.3 × 0.02 =
  14. 14.2.1 × 1.9 =
  15. 15.3.7 × 1.1 =
  16. 16.4.4 × 1.7 =
  17. 17.3.4 × 2.7 =
  18. 18.8.9 × 2.7 =
  19. 19.8.5 × 3.8 =
  20. 20.4.4 × 2.1 =
  21. 21.0.88 × 0.4 =
  22. 22.0.31 × 3.6 =
  23. 23.0.95 × 1.9 =
  24. 24.9.1 × 0.11 =
  25. 25.0.12 × 0.7 =
  26. 26.0.21 × 1.9 =
  27. 27.5.1 × 0.21 =
  28. 28.0.23 × 0.3 =
  29. 29.0.61 × 3.4 =
  30. 30.7.1 × 0.13 =
  31. 31.1.1 × 0.21 =
  32. 32.6.1 × 0.39 =
  33. 33.0.81 × 1.8 =
  34. 34.5.3 × 0.6 =
  35. 35.5.9 × 0.6 =
  36. 36.3.1 × 0.7 =
  37. 37.9.2 × 2.4 =
  38. 38.0.58 × 0.8 =
  39. 39.0.32 × 3.5 =
  40. 40.3.4 × 3.8 =

Answer key

  1. 3.12
  2. 1.539
  3. 3.99
  4. 1.377
  5. 1.512
  6. 0.418
  7. 2.211
  8. 0.988
  9. 0.765
  10. 0.483
  11. 1.98
  12. 14.4
  13. 0.166
  14. 3.99
  15. 4.07
  16. 7.48
  17. 9.18
  18. 24.03
  19. 32.3
  20. 9.24
  21. 0.352
  22. 1.116
  23. 1.805
  24. 1.001
  25. 0.084
  26. 0.399
  27. 1.071
  28. 0.069
  29. 2.074
  30. 0.923
  31. 0.231
  32. 2.379
  33. 1.458
  34. 3.18
  35. 3.54
  36. 2.17
  37. 22.08
  38. 0.464
  39. 1.12
  40. 12.92

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