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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 778 · 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. 1.4.9 × 1.5 =
  2. 2.4.6 × 2.8 =
  3. 3.0.64 × 3.8 =
  4. 4.0.78 × 2.8 =
  5. 5.0.55 × 2.5 =
  6. 6.0.31 × 0.8 =
  7. 7.6.5 × 0.4 =
  8. 8.0.21 × 2.5 =
  9. 9.0.39 × 1.1 =
  10. 10.9.1 × 1.1 =
  11. 11.0.31 × 3.9 =
  12. 12.0.31 × 0.4 =
  13. 13.0.2 × 1.9 =
  14. 14.0.83 × 2.3 =
  15. 15.0.56 × 1.8 =
  16. 16.0.5 × 0.4 =
  17. 17.0.89 × 3.1 =
  18. 18.3.8 × 0.4 =
  19. 19.1.1 × 2.6 =
  20. 20.0.2 × 0.5 =
  21. 21.0.59 × 1.7 =
  22. 22.0.5 × 0.27 =
  23. 23.4.7 × 0.7 =
  24. 24.8.1 × 0.11 =
  25. 25.0.59 × 3.8 =
  26. 26.3.1 × 0.5 =
  27. 27.6.5 × 0.24 =
  28. 28.6.6 × 0.25 =
  29. 29.0.13 × 3.7 =
  30. 30.3.4 × 2.2 =
  31. 31.0.73 × 3.3 =
  32. 32.2.4 × 0.22 =
  33. 33.6.4 × 0.12 =
  34. 34.0.27 × 0.4 =
  35. 35.1.8 × 0.28 =
  36. 36.3.6 × 0.36 =
  37. 37.4.2 × 0.03 =
  38. 38.2.1 × 0.9 =
  39. 39.0.39 × 0.2 =
  40. 40.0.16 × 1.8 =

Answer key

  1. 7.35
  2. 12.88
  3. 2.432
  4. 2.184
  5. 1.375
  6. 0.248
  7. 2.6
  8. 0.525
  9. 0.429
  10. 10.01
  11. 1.209
  12. 0.124
  13. 0.38
  14. 1.909
  15. 1.008
  16. 0.2
  17. 2.759
  18. 1.52
  19. 2.86
  20. 0.1
  21. 1.003
  22. 0.135
  23. 3.29
  24. 0.891
  25. 2.242
  26. 1.55
  27. 1.56
  28. 1.65
  29. 0.481
  30. 7.48
  31. 2.409
  32. 0.528
  33. 0.768
  34. 0.108
  35. 0.504
  36. 1.296
  37. 0.126
  38. 1.89
  39. 0.078
  40. 0.288

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