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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 797 · 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. 1.3.3 × 1.8 =
  2. 2.7.8 × 0.39 =
  3. 3.0.91 × 1.1 =
  4. 4.0.66 × 2.1 =
  5. 5.7.4 × 3.5 =
  6. 6.0.12 × 2.2 =
  7. 7.5.7 × 2.4 =
  8. 8.1.6 × 0.16 =
  9. 9.6.3 × 0.7 =
  10. 10.2.3 × 0.22 =
  11. 11.0.53 × 2.7 =
  12. 12.0.09 × 3.6 =
  13. 13.0.31 × 3.3 =
  14. 14.5.9 × 2.1 =
  15. 15.0.42 × 2.9 =
  16. 16.8.2 × 2.4 =
  17. 17.0.26 × 2.2 =
  18. 18.5.1 × 0.22 =
  19. 19.1.1 × 0.9 =
  20. 20.0.82 × 0.7 =
  21. 21.0.18 × 0.7 =
  22. 22.3.3 × 2.5 =
  23. 23.0.44 × 2.1 =
  24. 24.0.73 × 1.1 =
  25. 25.0.48 × 0.5 =
  26. 26.6.1 × 0.08 =
  27. 27.1.6 × 0.5 =
  28. 28.0.97 × 2.3 =
  29. 29.7.1 × 0.16 =
  30. 30.5.7 × 3.5 =
  31. 31.0.51 × 0.6 =
  32. 32.7.4 × 0.38 =
  33. 33.0.6 × 0.9 =
  34. 34.4.2 × 0.8 =
  35. 35.0.2 × 0.2 =
  36. 36.0.3 × 3.5 =
  37. 37.0.72 × 0.4 =
  38. 38.0.06 × 1.5 =
  39. 39.0.29 × 2.1 =
  40. 40.4.4 × 0.33 =

Answer key

  1. 5.94
  2. 3.042
  3. 1.001
  4. 1.386
  5. 25.9
  6. 0.264
  7. 13.68
  8. 0.256
  9. 4.41
  10. 0.506
  11. 1.431
  12. 0.324
  13. 1.023
  14. 12.39
  15. 1.218
  16. 19.68
  17. 0.572
  18. 1.122
  19. 0.99
  20. 0.574
  21. 0.126
  22. 8.25
  23. 0.924
  24. 0.803
  25. 0.24
  26. 0.488
  27. 0.8
  28. 2.231
  29. 1.136
  30. 19.95
  31. 0.306
  32. 2.812
  33. 0.54
  34. 3.36
  35. 0.04
  36. 1.05
  37. 0.288
  38. 0.09
  39. 0.609
  40. 1.452

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