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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 501 · 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. 1.7.2 × 2.8 =
  2. 2.0.34 × 3.9 =
  3. 3.4.5 × 3.8 =
  4. 4.0.82 × 2.8 =
  5. 5.1.7 × 0.07 =
  6. 6.5.4 × 0.23 =
  7. 7.2.1 × 3.8 =
  8. 8.0.41 × 1.2 =
  9. 9.0.5 × 0.31 =
  10. 10.0.71 × 2.2 =
  11. 11.4.7 × 0.17 =
  12. 12.0.06 × 2.8 =
  13. 13.0.98 × 3.1 =
  14. 14.0.87 × 3.3 =
  15. 15.4.3 × 3.5 =
  16. 16.0.2 × 0.02 =
  17. 17.0.8 × 3.2 =
  18. 18.1.8 × 2.2 =
  19. 19.0.77 × 1.1 =
  20. 20.0.48 × 3.1 =
  21. 21.0.56 × 3.1 =
  22. 22.0.09 × 0.5 =
  23. 23.0.85 × 0.7 =
  24. 24.9.9 × 0.21 =
  25. 25.0.59 × 2.1 =
  26. 26.0.45 × 1.1 =
  27. 27.0.76 × 0.9 =
  28. 28.0.61 × 3.7 =
  29. 29.0.88 × 1.3 =
  30. 30.0.34 × 3.6 =
  31. 31.5.6 × 3.6 =
  32. 32.6.4 × 0.07 =
  33. 33.0.22 × 3.4 =
  34. 34.0.98 × 3.9 =
  35. 35.2.8 × 0.36 =
  36. 36.2.1 × 3.5 =
  37. 37.5.3 × 1.3 =
  38. 38.0.79 × 1.8 =
  39. 39.0.98 × 1.5 =
  40. 40.0.34 × 0.3 =

Answer key

  1. 20.16
  2. 1.326
  3. 17.1
  4. 2.296
  5. 0.119
  6. 1.242
  7. 7.98
  8. 0.492
  9. 0.155
  10. 1.562
  11. 0.799
  12. 0.168
  13. 3.038
  14. 2.871
  15. 15.05
  16. 0.004
  17. 2.56
  18. 3.96
  19. 0.847
  20. 1.488
  21. 1.736
  22. 0.045
  23. 0.595
  24. 2.079
  25. 1.239
  26. 0.495
  27. 0.684
  28. 2.257
  29. 1.144
  30. 1.224
  31. 20.16
  32. 0.448
  33. 0.748
  34. 3.822
  35. 1.008
  36. 7.35
  37. 6.89
  38. 1.422
  39. 1.47
  40. 0.102

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