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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 831 · 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 × 1.1 =
  2. 2.7.9 × 3.1 =
  3. 3.0.25 × 2.9 =
  4. 4.1.6 × 0.35 =
  5. 5.9.6 × 0.07 =
  6. 6.7.9 × 0.25 =
  7. 7.0.17 × 2.3 =
  8. 8.8.9 × 0.14 =
  9. 9.8.4 × 0.27 =
  10. 10.9.4 × 0.5 =
  11. 11.3.8 × 3.7 =
  12. 12.0.32 × 2.6 =
  13. 13.0.55 × 1.4 =
  14. 14.0.31 × 1.4 =
  15. 15.0.54 × 0.5 =
  16. 16.0.24 × 3.7 =
  17. 17.0.72 × 0.2 =
  18. 18.0.24 × 0.3 =
  19. 19.6.4 × 0.02 =
  20. 20.9.4 × 1.4 =
  21. 21.0.21 × 0.4 =
  22. 22.9.4 × 0.5 =
  23. 23.0.31 × 0.6 =
  24. 24.1.1 × 0.05 =
  25. 25.0.54 × 0.5 =
  26. 26.0.23 × 1.5 =
  27. 27.0.55 × 2.2 =
  28. 28.1.7 × 0.14 =
  29. 29.1.6 × 0.21 =
  30. 30.0.36 × 2.3 =
  31. 31.1.5 × 0.07 =
  32. 32.7.5 × 1.3 =
  33. 33.0.33 × 2.8 =
  34. 34.0.61 × 1.8 =
  35. 35.0.41 × 0.9 =
  36. 36.0.82 × 2.5 =
  37. 37.0.17 × 1.2 =
  38. 38.8.1 × 3.1 =
  39. 39.6.2 × 3.8 =
  40. 40.8.2 × 0.2 =

Answer key

  1. 8.58
  2. 24.49
  3. 0.725
  4. 0.56
  5. 0.672
  6. 1.975
  7. 0.391
  8. 1.246
  9. 2.268
  10. 4.7
  11. 14.06
  12. 0.832
  13. 0.77
  14. 0.434
  15. 0.27
  16. 0.888
  17. 0.144
  18. 0.072
  19. 0.128
  20. 13.16
  21. 0.084
  22. 4.7
  23. 0.186
  24. 0.055
  25. 0.27
  26. 0.345
  27. 1.21
  28. 0.238
  29. 0.336
  30. 0.828
  31. 0.105
  32. 9.75
  33. 0.924
  34. 1.098
  35. 0.369
  36. 2.05
  37. 0.204
  38. 25.11
  39. 23.56
  40. 1.64

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