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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 322 · 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. 1.2.9 × 3.8 =
  2. 2.0.31 × 3.8 =
  3. 3.8.1 × 0.11 =
  4. 4.1.8 × 2.9 =
  5. 5.0.46 × 0.9 =
  6. 6.3.4 × 2.1 =
  7. 7.5.7 × 0.37 =
  8. 8.0.71 × 0.5 =
  9. 9.0.31 × 2.2 =
  10. 10.0.91 × 3.1 =
  11. 11.6.9 × 0.11 =
  12. 12.0.02 × 0.3 =
  13. 13.9.7 × 0.05 =
  14. 14.1.1 × 0.7 =
  15. 15.6.6 × 0.22 =
  16. 16.0.61 × 1.9 =
  17. 17.0.15 × 0.4 =
  18. 18.3.3 × 0.04 =
  19. 19.1.9 × 2.9 =
  20. 20.0.21 × 0.4 =
  21. 21.8.3 × 0.9 =
  22. 22.2.6 × 1.6 =
  23. 23.0.92 × 3.1 =
  24. 24.0.54 × 2.5 =
  25. 25.8.4 × 0.12 =
  26. 26.2.7 × 0.4 =
  27. 27.8.8 × 0.8 =
  28. 28.0.56 × 3.5 =
  29. 29.0.13 × 0.9 =
  30. 30.0.37 × 1.6 =
  31. 31.3.4 × 0.31 =
  32. 32.0.37 × 3.7 =
  33. 33.0.29 × 1.1 =
  34. 34.1.2 × 0.12 =
  35. 35.1.6 × 0.8 =
  36. 36.2.1 × 0.07 =
  37. 37.9.5 × 0.15 =
  38. 38.0.61 × 2.8 =
  39. 39.0.48 × 3.5 =
  40. 40.0.16 × 3.2 =

Answer key

  1. 11.02
  2. 1.178
  3. 0.891
  4. 5.22
  5. 0.414
  6. 7.14
  7. 2.109
  8. 0.355
  9. 0.682
  10. 2.821
  11. 0.759
  12. 0.006
  13. 0.485
  14. 0.77
  15. 1.452
  16. 1.159
  17. 0.06
  18. 0.132
  19. 5.51
  20. 0.084
  21. 7.47
  22. 4.16
  23. 2.852
  24. 1.35
  25. 1.008
  26. 1.08
  27. 7.04
  28. 1.96
  29. 0.117
  30. 0.592
  31. 1.054
  32. 1.369
  33. 0.319
  34. 0.144
  35. 1.28
  36. 0.147
  37. 1.425
  38. 1.708
  39. 1.68
  40. 0.512

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