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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 620 · 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. 1.0.54 × 2.1 =
  2. 2.0.3 × 1.1 =
  3. 3.9.2 × 3.2 =
  4. 4.3.8 × 2.2 =
  5. 5.1.4 × 0.21 =
  6. 6.9.6 × 0.27 =
  7. 7.8.1 × 3.4 =
  8. 8.0.28 × 0.9 =
  9. 9.0.9 × 0.2 =
  10. 10.9.6 × 0.35 =
  11. 11.7.3 × 0.11 =
  12. 12.0.72 × 3.1 =
  13. 13.6.2 × 1.6 =
  14. 14.0.61 × 2.5 =
  15. 15.0.03 × 1.3 =
  16. 16.0.91 × 3.4 =
  17. 17.3.7 × 0.02 =
  18. 18.0.42 × 0.3 =
  19. 19.7.2 × 0.08 =
  20. 20.2.4 × 3.5 =
  21. 21.0.42 × 2.8 =
  22. 22.2.2 × 0.28 =
  23. 23.4.6 × 1.7 =
  24. 24.7.7 × 0.3 =
  25. 25.8.9 × 1.3 =
  26. 26.4.1 × 1.5 =
  27. 27.1.1 × 0.6 =
  28. 28.0.42 × 3.6 =
  29. 29.6.9 × 0.16 =
  30. 30.0.18 × 0.6 =
  31. 31.0.77 × 0.8 =
  32. 32.8.6 × 0.8 =
  33. 33.0.45 × 0.3 =
  34. 34.0.28 × 3.4 =
  35. 35.9.2 × 0.7 =
  36. 36.0.24 × 1.3 =
  37. 37.0.06 × 2.7 =
  38. 38.9.7 × 0.33 =
  39. 39.0.2 × 0.32 =
  40. 40.5.3 × 1.2 =

Answer key

  1. 1.134
  2. 0.33
  3. 29.44
  4. 8.36
  5. 0.294
  6. 2.592
  7. 27.54
  8. 0.252
  9. 0.18
  10. 3.36
  11. 0.803
  12. 2.232
  13. 9.92
  14. 1.525
  15. 0.039
  16. 3.094
  17. 0.074
  18. 0.126
  19. 0.576
  20. 8.4
  21. 1.176
  22. 0.616
  23. 7.82
  24. 2.31
  25. 11.57
  26. 6.15
  27. 0.66
  28. 1.512
  29. 1.104
  30. 0.108
  31. 0.616
  32. 6.88
  33. 0.135
  34. 0.952
  35. 6.44
  36. 0.312
  37. 0.162
  38. 3.201
  39. 0.064
  40. 6.36

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