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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 902 · 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. 1.7.8 × 2.1 =
  2. 2.9.3 × 0.27 =
  3. 3.2.6 × 3.3 =
  4. 4.4.6 × 2.7 =
  5. 5.0.05 × 3.2 =
  6. 6.0.44 × 0.4 =
  7. 7.9.5 × 0.21 =
  8. 8.0.91 × 3.1 =
  9. 9.1.7 × 0.9 =
  10. 10.6.5 × 0.09 =
  11. 11.0.96 × 3.1 =
  12. 12.4.1 × 3.1 =
  13. 13.0.62 × 1.4 =
  14. 14.6.9 × 0.37 =
  15. 15.0.49 × 2.1 =
  16. 16.0.31 × 0.4 =
  17. 17.0.98 × 2.1 =
  18. 18.2.8 × 0.5 =
  19. 19.0.65 × 3.9 =
  20. 20.0.61 × 0.7 =
  21. 21.4.1 × 2.4 =
  22. 22.2.9 × 0.13 =
  23. 23.0.03 × 1.1 =
  24. 24.1.2 × 0.2 =
  25. 25.2.8 × 0.21 =
  26. 26.1.7 × 0.02 =
  27. 27.0.54 × 1.3 =
  28. 28.2.8 × 0.39 =
  29. 29.3.9 × 1.1 =
  30. 30.6.4 × 0.29 =
  31. 31.5.3 × 3.9 =
  32. 32.0.82 × 0.7 =
  33. 33.3.9 × 0.38 =
  34. 34.0.77 × 1.5 =
  35. 35.9.1 × 3.4 =
  36. 36.3.4 × 3.1 =
  37. 37.9.9 × 0.22 =
  38. 38.7.8 × 2.8 =
  39. 39.1.4 × 3.8 =
  40. 40.6.2 × 0.04 =

Answer key

  1. 16.38
  2. 2.511
  3. 8.58
  4. 12.42
  5. 0.16
  6. 0.176
  7. 1.995
  8. 2.821
  9. 1.53
  10. 0.585
  11. 2.976
  12. 12.71
  13. 0.868
  14. 2.553
  15. 1.029
  16. 0.124
  17. 2.058
  18. 1.4
  19. 2.535
  20. 0.427
  21. 9.84
  22. 0.377
  23. 0.033
  24. 0.24
  25. 0.588
  26. 0.034
  27. 0.702
  28. 1.092
  29. 4.29
  30. 1.856
  31. 20.67
  32. 0.574
  33. 1.482
  34. 1.155
  35. 30.94
  36. 10.54
  37. 2.178
  38. 21.84
  39. 5.32
  40. 0.248

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