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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 807 · 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. 1.6.3 × 1.7 =
  2. 2.6.3 × 2.9 =
  3. 3.5.3 × 3.1 =
  4. 4.0.5 × 0.22 =
  5. 5.5.5 × 2.6 =
  6. 6.0.71 × 2.1 =
  7. 7.1.9 × 1.8 =
  8. 8.0.18 × 0.9 =
  9. 9.5.2 × 1.9 =
  10. 10.4.3 × 3.7 =
  11. 11.6.7 × 0.2 =
  12. 12.8.9 × 0.19 =
  13. 13.8.1 × 0.2 =
  14. 14.0.21 × 1.3 =
  15. 15.0.46 × 1.1 =
  16. 16.2.1 × 0.38 =
  17. 17.2.1 × 2.3 =
  18. 18.4.2 × 0.9 =
  19. 19.4.2 × 0.36 =
  20. 20.0.66 × 1.2 =
  21. 21.8.3 × 0.21 =
  22. 22.1.2 × 1.7 =
  23. 23.0.65 × 3.1 =
  24. 24.5.3 × 0.4 =
  25. 25.8.2 × 1.3 =
  26. 26.9.5 × 0.2 =
  27. 27.9.8 × 2.9 =
  28. 28.5.8 × 0.21 =
  29. 29.0.13 × 3.8 =
  30. 30.5.6 × 0.26 =
  31. 31.2.4 × 0.21 =
  32. 32.9.6 × 0.06 =
  33. 33.7.6 × 0.31 =
  34. 34.0.94 × 0.4 =
  35. 35.5.1 × 1.7 =
  36. 36.3.5 × 0.18 =
  37. 37.3.8 × 0.17 =
  38. 38.7.3 × 0.9 =
  39. 39.0.45 × 0.5 =
  40. 40.0.52 × 3.5 =

Answer key

  1. 10.71
  2. 18.27
  3. 16.43
  4. 0.11
  5. 14.3
  6. 1.491
  7. 3.42
  8. 0.162
  9. 9.88
  10. 15.91
  11. 1.34
  12. 1.691
  13. 1.62
  14. 0.273
  15. 0.506
  16. 0.798
  17. 4.83
  18. 3.78
  19. 1.512
  20. 0.792
  21. 1.743
  22. 2.04
  23. 2.015
  24. 2.12
  25. 10.66
  26. 1.9
  27. 28.42
  28. 1.218
  29. 0.494
  30. 1.456
  31. 0.504
  32. 0.576
  33. 2.356
  34. 0.376
  35. 8.67
  36. 0.63
  37. 0.646
  38. 6.57
  39. 0.225
  40. 1.82

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