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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 850 · 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. 1.2.1 × 3.6 =
  2. 2.9.2 × 0.05 =
  3. 3.0.25 × 3.2 =
  4. 4.4.8 × 0.25 =
  5. 5.1.3 × 0.11 =
  6. 6.0.94 × 2.8 =
  7. 7.1.8 × 0.15 =
  8. 8.0.83 × 2.2 =
  9. 9.0.41 × 1.4 =
  10. 10.4.6 × 3.1 =
  11. 11.0.37 × 1.1 =
  12. 12.0.28 × 2.9 =
  13. 13.1.3 × 0.38 =
  14. 14.9.4 × 0.31 =
  15. 15.0.8 × 0.02 =
  16. 16.0.74 × 0.7 =
  17. 17.0.51 × 2.7 =
  18. 18.3.1 × 3.2 =
  19. 19.0.96 × 0.6 =
  20. 20.0.04 × 2.1 =
  21. 21.8.8 × 2.1 =
  22. 22.1.1 × 0.9 =
  23. 23.2.7 × 0.33 =
  24. 24.0.39 × 1.1 =
  25. 25.0.99 × 1.3 =
  26. 26.3.4 × 0.5 =
  27. 27.0.08 × 0.8 =
  28. 28.8.5 × 2.7 =
  29. 29.3.1 × 0.08 =
  30. 30.0.14 × 2.9 =
  31. 31.0.24 × 3.8 =
  32. 32.4.2 × 0.26 =
  33. 33.5.6 × 1.6 =
  34. 34.0.87 × 0.9 =
  35. 35.8.6 × 0.23 =
  36. 36.0.2 × 0.9 =
  37. 37.0.66 × 3.4 =
  38. 38.9.1 × 0.12 =
  39. 39.0.25 × 2.5 =
  40. 40.0.9 × 0.7 =

Answer key

  1. 7.56
  2. 0.46
  3. 0.8
  4. 1.2
  5. 0.143
  6. 2.632
  7. 0.27
  8. 1.826
  9. 0.574
  10. 14.26
  11. 0.407
  12. 0.812
  13. 0.494
  14. 2.914
  15. 0.016
  16. 0.518
  17. 1.377
  18. 9.92
  19. 0.576
  20. 0.084
  21. 18.48
  22. 0.99
  23. 0.891
  24. 0.429
  25. 1.287
  26. 1.7
  27. 0.064
  28. 22.95
  29. 0.248
  30. 0.406
  31. 0.912
  32. 1.092
  33. 8.96
  34. 0.783
  35. 1.978
  36. 0.18
  37. 2.244
  38. 1.092
  39. 0.625
  40. 0.63

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