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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 406 · 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. 1.0.99 × 0.5 =
  2. 2.0.3 × 0.24 =
  3. 3.4.5 × 0.35 =
  4. 4.9.9 × 3.7 =
  5. 5.0.12 × 2.9 =
  6. 6.1.2 × 1.1 =
  7. 7.2.1 × 0.06 =
  8. 8.0.87 × 0.6 =
  9. 9.0.29 × 1.3 =
  10. 10.0.41 × 2.1 =
  11. 11.0.17 × 1.3 =
  12. 12.0.67 × 3.1 =
  13. 13.0.75 × 1.3 =
  14. 14.0.73 × 1.6 =
  15. 15.0.74 × 0.4 =
  16. 16.0.56 × 2.8 =
  17. 17.0.29 × 1.1 =
  18. 18.0.68 × 1.5 =
  19. 19.3.8 × 2.4 =
  20. 20.0.43 × 3.1 =
  21. 21.5.1 × 0.27 =
  22. 22.2.9 × 0.06 =
  23. 23.0.31 × 1.3 =
  24. 24.0.59 × 2.2 =
  25. 25.0.21 × 0.8 =
  26. 26.6.5 × 0.29 =
  27. 27.0.62 × 1.8 =
  28. 28.0.31 × 1.3 =
  29. 29.0.21 × 0.2 =
  30. 30.4.6 × 0.13 =
  31. 31.0.52 × 3.5 =
  32. 32.0.88 × 2.6 =
  33. 33.8.1 × 0.39 =
  34. 34.0.25 × 2.3 =
  35. 35.2.3 × 0.12 =
  36. 36.1.1 × 0.16 =
  37. 37.5.5 × 2.7 =
  38. 38.9.4 × 0.12 =
  39. 39.0.91 × 0.5 =
  40. 40.4.3 × 3.3 =

Answer key

  1. 0.495
  2. 0.072
  3. 1.575
  4. 36.63
  5. 0.348
  6. 1.32
  7. 0.126
  8. 0.522
  9. 0.377
  10. 0.861
  11. 0.221
  12. 2.077
  13. 0.975
  14. 1.168
  15. 0.296
  16. 1.568
  17. 0.319
  18. 1.02
  19. 9.12
  20. 1.333
  21. 1.377
  22. 0.174
  23. 0.403
  24. 1.298
  25. 0.168
  26. 1.885
  27. 1.116
  28. 0.403
  29. 0.042
  30. 0.598
  31. 1.82
  32. 2.288
  33. 3.159
  34. 0.575
  35. 0.276
  36. 0.176
  37. 14.85
  38. 1.128
  39. 0.455
  40. 14.19

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