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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 509 · 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. 1.7.5 × 0.19 =
  2. 2.5.4 × 0.35 =
  3. 3.0.8 × 1.2 =
  4. 4.5.5 × 0.15 =
  5. 5.3.1 × 0.26 =
  6. 6.0.62 × 1.9 =
  7. 7.0.34 × 2.4 =
  8. 8.9.5 × 0.9 =
  9. 9.3.8 × 0.21 =
  10. 10.0.6 × 0.34 =
  11. 11.0.86 × 1.9 =
  12. 12.0.87 × 2.1 =
  13. 13.0.16 × 0.3 =
  14. 14.3.1 × 1.4 =
  15. 15.3.6 × 0.04 =
  16. 16.0.17 × 0.9 =
  17. 17.0.31 × 0.4 =
  18. 18.4.8 × 0.33 =
  19. 19.0.37 × 1.9 =
  20. 20.8.9 × 2.7 =
  21. 21.4.5 × 1.3 =
  22. 22.0.54 × 0.9 =
  23. 23.3.5 × 3.9 =
  24. 24.3.1 × 0.2 =
  25. 25.0.53 × 0.4 =
  26. 26.8.3 × 0.3 =
  27. 27.0.58 × 1.3 =
  28. 28.5.8 × 0.09 =
  29. 29.0.16 × 2.1 =
  30. 30.0.52 × 1.9 =
  31. 31.0.87 × 3.3 =
  32. 32.0.16 × 1.3 =
  33. 33.0.28 × 2.9 =
  34. 34.8.4 × 3.9 =
  35. 35.8.1 × 0.8 =
  36. 36.0.15 × 0.9 =
  37. 37.0.21 × 1.1 =
  38. 38.0.11 × 1.7 =
  39. 39.5.3 × 3.8 =
  40. 40.0.64 × 2.4 =

Answer key

  1. 1.425
  2. 1.89
  3. 0.96
  4. 0.825
  5. 0.806
  6. 1.178
  7. 0.816
  8. 8.55
  9. 0.798
  10. 0.204
  11. 1.634
  12. 1.827
  13. 0.048
  14. 4.34
  15. 0.144
  16. 0.153
  17. 0.124
  18. 1.584
  19. 0.703
  20. 24.03
  21. 5.85
  22. 0.486
  23. 13.65
  24. 0.62
  25. 0.212
  26. 2.49
  27. 0.754
  28. 0.522
  29. 0.336
  30. 0.988
  31. 2.871
  32. 0.208
  33. 0.812
  34. 32.76
  35. 6.48
  36. 0.135
  37. 0.231
  38. 0.187
  39. 20.14
  40. 1.536

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