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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 984 · 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. 1.0.5 × 0.8 =
  2. 2.0.81 × 2.3 =
  3. 3.3.1 × 0.29 =
  4. 4.2.1 × 0.05 =
  5. 5.4.7 × 0.06 =
  6. 6.2.1 × 0.16 =
  7. 7.9.1 × 0.08 =
  8. 8.6.2 × 0.39 =
  9. 9.1.3 × 3.4 =
  10. 10.6.3 × 0.07 =
  11. 11.0.4 × 0.4 =
  12. 12.6.5 × 3.8 =
  13. 13.0.5 × 0.29 =
  14. 14.0.11 × 3.9 =
  15. 15.0.99 × 3.6 =
  16. 16.7.5 × 1.3 =
  17. 17.0.5 × 1.1 =
  18. 18.0.51 × 1.2 =
  19. 19.0.23 × 3.1 =
  20. 20.5.6 × 3.5 =
  21. 21.0.17 × 0.7 =
  22. 22.0.15 × 0.3 =
  23. 23.0.61 × 3.1 =
  24. 24.8.1 × 1.1 =
  25. 25.0.17 × 3.1 =
  26. 26.0.06 × 2.5 =
  27. 27.6.8 × 3.5 =
  28. 28.9.2 × 3.6 =
  29. 29.0.86 × 0.3 =
  30. 30.8.7 × 2.2 =
  31. 31.0.3 × 0.21 =
  32. 32.8.4 × 0.23 =
  33. 33.5.3 × 3.8 =
  34. 34.1.7 × 2.7 =
  35. 35.0.11 × 0.7 =
  36. 36.1.1 × 0.21 =
  37. 37.7.6 × 3.4 =
  38. 38.1.5 × 1.8 =
  39. 39.0.62 × 3.8 =
  40. 40.4.2 × 2.8 =

Answer key

  1. 0.4
  2. 1.863
  3. 0.899
  4. 0.105
  5. 0.282
  6. 0.336
  7. 0.728
  8. 2.418
  9. 4.42
  10. 0.441
  11. 0.16
  12. 24.7
  13. 0.145
  14. 0.429
  15. 3.564
  16. 9.75
  17. 0.55
  18. 0.612
  19. 0.713
  20. 19.6
  21. 0.119
  22. 0.045
  23. 1.891
  24. 8.91
  25. 0.527
  26. 0.15
  27. 23.8
  28. 33.12
  29. 0.258
  30. 19.14
  31. 0.063
  32. 1.932
  33. 20.14
  34. 4.59
  35. 0.077
  36. 0.231
  37. 25.84
  38. 2.7
  39. 2.356
  40. 11.76

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