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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 810 · 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. 1.6.9 × 3.1 =
  2. 2.0.28 × 1.6 =
  3. 3.0.59 × 2.1 =
  4. 4.5.9 × 0.09 =
  5. 5.4.4 × 1.7 =
  6. 6.3.1 × 3.4 =
  7. 7.9.8 × 0.31 =
  8. 8.4.6 × 3.6 =
  9. 9.0.72 × 0.2 =
  10. 10.0.91 × 1.2 =
  11. 11.0.11 × 3.3 =
  12. 12.3.1 × 0.8 =
  13. 13.5.3 × 1.7 =
  14. 14.0.41 × 1.1 =
  15. 15.0.44 × 2.8 =
  16. 16.6.4 × 2.8 =
  17. 17.9.4 × 0.22 =
  18. 18.0.4 × 0.09 =
  19. 19.0.71 × 2.3 =
  20. 20.4.6 × 0.15 =
  21. 21.2.5 × 3.9 =
  22. 22.9.5 × 0.18 =
  23. 23.0.82 × 2.8 =
  24. 24.9.5 × 0.3 =
  25. 25.7.7 × 1.9 =
  26. 26.0.94 × 0.4 =
  27. 27.3.6 × 0.2 =
  28. 28.9.5 × 2.1 =
  29. 29.9.7 × 0.26 =
  30. 30.9.5 × 2.6 =
  31. 31.0.11 × 0.7 =
  32. 32.3.1 × 1.7 =
  33. 33.1.1 × 0.8 =
  34. 34.0.22 × 0.6 =
  35. 35.0.93 × 3.9 =
  36. 36.2.6 × 1.8 =
  37. 37.1.5 × 0.22 =
  38. 38.0.59 × 1.1 =
  39. 39.0.12 × 2.1 =
  40. 40.0.66 × 0.5 =

Answer key

  1. 21.39
  2. 0.448
  3. 1.239
  4. 0.531
  5. 7.48
  6. 10.54
  7. 3.038
  8. 16.56
  9. 0.144
  10. 1.092
  11. 0.363
  12. 2.48
  13. 9.01
  14. 0.451
  15. 1.232
  16. 17.92
  17. 2.068
  18. 0.036
  19. 1.633
  20. 0.69
  21. 9.75
  22. 1.71
  23. 2.296
  24. 2.85
  25. 14.63
  26. 0.376
  27. 0.72
  28. 19.95
  29. 2.522
  30. 24.7
  31. 0.077
  32. 5.27
  33. 0.88
  34. 0.132
  35. 3.627
  36. 4.68
  37. 0.33
  38. 0.649
  39. 0.252
  40. 0.33

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