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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 74 · 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. 1.0.03 × 1.5 =
  2. 2.0.7 × 0.31 =
  3. 3.6.1 × 1.1 =
  4. 4.7.9 × 0.29 =
  5. 5.0.85 × 3.4 =
  6. 6.0.23 × 3.5 =
  7. 7.2.1 × 0.11 =
  8. 8.0.31 × 1.7 =
  9. 9.7.1 × 1.1 =
  10. 10.0.33 × 1.9 =
  11. 11.3.7 × 2.7 =
  12. 12.0.44 × 1.2 =
  13. 13.0.56 × 2.5 =
  14. 14.0.42 × 1.8 =
  15. 15.0.66 × 3.2 =
  16. 16.0.06 × 3.1 =
  17. 17.0.41 × 2.8 =
  18. 18.7.4 × 0.03 =
  19. 19.0.3 × 0.6 =
  20. 20.1.2 × 1.3 =
  21. 21.3.2 × 1.7 =
  22. 22.4.1 × 0.12 =
  23. 23.0.31 × 2.1 =
  24. 24.3.7 × 0.38 =
  25. 25.2.1 × 0.28 =
  26. 26.0.78 × 0.8 =
  27. 27.0.95 × 0.3 =
  28. 28.0.43 × 2.1 =
  29. 29.5.2 × 0.26 =
  30. 30.0.15 × 1.1 =
  31. 31.0.92 × 1.1 =
  32. 32.0.07 × 2.1 =
  33. 33.0.29 × 1.5 =
  34. 34.0.71 × 3.8 =
  35. 35.2.7 × 2.1 =
  36. 36.7.4 × 0.07 =
  37. 37.6.9 × 3.9 =
  38. 38.8.8 × 3.8 =
  39. 39.0.85 × 1.1 =
  40. 40.5.9 × 0.04 =

Answer key

  1. 0.045
  2. 0.217
  3. 6.71
  4. 2.291
  5. 2.89
  6. 0.805
  7. 0.231
  8. 0.527
  9. 7.81
  10. 0.627
  11. 9.99
  12. 0.528
  13. 1.4
  14. 0.756
  15. 2.112
  16. 0.186
  17. 1.148
  18. 0.222
  19. 0.18
  20. 1.56
  21. 5.44
  22. 0.492
  23. 0.651
  24. 1.406
  25. 0.588
  26. 0.624
  27. 0.285
  28. 0.903
  29. 1.352
  30. 0.165
  31. 1.012
  32. 0.147
  33. 0.435
  34. 2.698
  35. 5.67
  36. 0.518
  37. 26.91
  38. 33.44
  39. 0.935
  40. 0.236

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