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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 915 · 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. 1.0.28 × 2.5 =
  2. 2.0.58 × 2.3 =
  3. 3.0.23 × 3.7 =
  4. 4.0.74 × 1.9 =
  5. 5.2.1 × 0.22 =
  6. 6.1.5 × 0.22 =
  7. 7.8.5 × 0.9 =
  8. 8.5.5 × 0.16 =
  9. 9.7.3 × 0.2 =
  10. 10.0.33 × 0.8 =
  11. 11.6.1 × 0.31 =
  12. 12.0.36 × 3.7 =
  13. 13.0.21 × 3.6 =
  14. 14.1.9 × 0.6 =
  15. 15.0.8 × 0.2 =
  16. 16.0.69 × 2.9 =
  17. 17.9.8 × 0.34 =
  18. 18.0.31 × 3.2 =
  19. 19.9.2 × 0.8 =
  20. 20.0.7 × 2.8 =
  21. 21.0.71 × 1.7 =
  22. 22.9.3 × 2.5 =
  23. 23.5.5 × 2.1 =
  24. 24.0.46 × 1.5 =
  25. 25.4.2 × 2.1 =
  26. 26.0.69 × 0.5 =
  27. 27.1.7 × 0.03 =
  28. 28.0.99 × 1.5 =
  29. 29.5.2 × 0.17 =
  30. 30.0.82 × 2.2 =
  31. 31.6.7 × 0.24 =
  32. 32.0.39 × 1.9 =
  33. 33.0.36 × 1.1 =
  34. 34.8.6 × 0.3 =
  35. 35.4.1 × 3.1 =
  36. 36.8.1 × 0.11 =
  37. 37.3.2 × 0.14 =
  38. 38.9.9 × 0.15 =
  39. 39.0.05 × 2.3 =
  40. 40.4.2 × 2.9 =

Answer key

  1. 0.7
  2. 1.334
  3. 0.851
  4. 1.406
  5. 0.462
  6. 0.33
  7. 7.65
  8. 0.88
  9. 1.46
  10. 0.264
  11. 1.891
  12. 1.332
  13. 0.756
  14. 1.14
  15. 0.16
  16. 2.001
  17. 3.332
  18. 0.992
  19. 7.36
  20. 1.96
  21. 1.207
  22. 23.25
  23. 11.55
  24. 0.69
  25. 8.82
  26. 0.345
  27. 0.051
  28. 1.485
  29. 0.884
  30. 1.804
  31. 1.608
  32. 0.741
  33. 0.396
  34. 2.58
  35. 12.71
  36. 0.891
  37. 0.448
  38. 1.485
  39. 0.115
  40. 12.18

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