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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 921 · 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. 1.0.57 × 1.1 =
  2. 2.3.3 × 0.31 =
  3. 3.0.45 × 1.8 =
  4. 4.1.7 × 0.39 =
  5. 5.7.8 × 0.14 =
  6. 6.4.9 × 0.22 =
  7. 7.0.51 × 2.1 =
  8. 8.0.5 × 0.04 =
  9. 9.2.1 × 1.2 =
  10. 10.7.1 × 2.2 =
  11. 11.6.1 × 0.5 =
  12. 12.0.29 × 1.7 =
  13. 13.0.24 × 1.9 =
  14. 14.0.82 × 2.4 =
  15. 15.2.6 × 2.7 =
  16. 16.0.18 × 2.2 =
  17. 17.0.24 × 1.1 =
  18. 18.0.46 × 0.4 =
  19. 19.0.46 × 3.6 =
  20. 20.7.8 × 1.2 =
  21. 21.0.41 × 1.7 =
  22. 22.8.4 × 0.09 =
  23. 23.0.51 × 3.3 =
  24. 24.0.11 × 0.7 =
  25. 25.9.7 × 0.24 =
  26. 26.9.4 × 0.04 =
  27. 27.0.69 × 3.7 =
  28. 28.0.52 × 2.2 =
  29. 29.3.4 × 0.31 =
  30. 30.9.8 × 1.2 =
  31. 31.1.7 × 0.12 =
  32. 32.0.36 × 2.4 =
  33. 33.0.2 × 3.7 =
  34. 34.8.9 × 1.8 =
  35. 35.0.18 × 1.1 =
  36. 36.0.51 × 0.6 =
  37. 37.0.41 × 2.2 =
  38. 38.7.8 × 0.36 =
  39. 39.7.9 × 0.21 =
  40. 40.0.08 × 2.2 =

Answer key

  1. 0.627
  2. 1.023
  3. 0.81
  4. 0.663
  5. 1.092
  6. 1.078
  7. 1.071
  8. 0.02
  9. 2.52
  10. 15.62
  11. 3.05
  12. 0.493
  13. 0.456
  14. 1.968
  15. 7.02
  16. 0.396
  17. 0.264
  18. 0.184
  19. 1.656
  20. 9.36
  21. 0.697
  22. 0.756
  23. 1.683
  24. 0.077
  25. 2.328
  26. 0.376
  27. 2.553
  28. 1.144
  29. 1.054
  30. 11.76
  31. 0.204
  32. 0.864
  33. 0.74
  34. 16.02
  35. 0.198
  36. 0.306
  37. 0.902
  38. 2.808
  39. 1.659
  40. 0.176

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