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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 610 · 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. 1.0.47 × 2.1 =
  2. 2.0.8 × 0.25 =
  3. 3.1.3 × 0.27 =
  4. 4.0.54 × 0.7 =
  5. 5.7.8 × 1.6 =
  6. 6.3.8 × 0.29 =
  7. 7.0.81 × 0.6 =
  8. 8.6.6 × 2.4 =
  9. 9.0.77 × 2.8 =
  10. 10.4.8 × 0.21 =
  11. 11.0.99 × 3.7 =
  12. 12.3.7 × 0.17 =
  13. 13.6.8 × 3.3 =
  14. 14.0.91 × 0.4 =
  15. 15.0.95 × 2.7 =
  16. 16.0.53 × 2.2 =
  17. 17.0.05 × 3.8 =
  18. 18.2.1 × 0.2 =
  19. 19.2.4 × 3.1 =
  20. 20.2.2 × 0.13 =
  21. 21.0.04 × 1.6 =
  22. 22.1.2 × 0.34 =
  23. 23.2.6 × 0.14 =
  24. 24.9.4 × 0.15 =
  25. 25.4.4 × 0.16 =
  26. 26.0.57 × 0.5 =
  27. 27.0.55 × 2.8 =
  28. 28.9.2 × 0.19 =
  29. 29.2.1 × 0.4 =
  30. 30.8.1 × 2.8 =
  31. 31.0.74 × 3.2 =
  32. 32.0.8 × 0.39 =
  33. 33.8.1 × 0.15 =
  34. 34.2.1 × 2.5 =
  35. 35.1.5 × 0.26 =
  36. 36.3.9 × 1.2 =
  37. 37.0.6 × 0.21 =
  38. 38.6.1 × 0.4 =
  39. 39.0.12 × 1.5 =
  40. 40.8.5 × 1.8 =

Answer key

  1. 0.987
  2. 0.2
  3. 0.351
  4. 0.378
  5. 12.48
  6. 1.102
  7. 0.486
  8. 15.84
  9. 2.156
  10. 1.008
  11. 3.663
  12. 0.629
  13. 22.44
  14. 0.364
  15. 2.565
  16. 1.166
  17. 0.19
  18. 0.42
  19. 7.44
  20. 0.286
  21. 0.064
  22. 0.408
  23. 0.364
  24. 1.41
  25. 0.704
  26. 0.285
  27. 1.54
  28. 1.748
  29. 0.84
  30. 22.68
  31. 2.368
  32. 0.312
  33. 1.215
  34. 5.25
  35. 0.39
  36. 4.68
  37. 0.126
  38. 2.44
  39. 0.18
  40. 15.3

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