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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 138 · 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. 1.0.49 × 2.1 =
  2. 2.5.5 × 2.8 =
  3. 3.0.42 × 2.3 =
  4. 4.2.1 × 2.4 =
  5. 5.8.2 × 1.2 =
  6. 6.0.68 × 1.6 =
  7. 7.0.45 × 2.3 =
  8. 8.0.38 × 3.4 =
  9. 9.6.8 × 2.9 =
  10. 10.0.73 × 1.9 =
  11. 11.6.6 × 0.03 =
  12. 12.0.41 × 3.6 =
  13. 13.0.75 × 2.9 =
  14. 14.0.14 × 0.9 =
  15. 15.9.4 × 0.06 =
  16. 16.0.12 × 0.6 =
  17. 17.1.7 × 0.3 =
  18. 18.0.23 × 0.5 =
  19. 19.0.75 × 0.2 =
  20. 20.0.85 × 1.2 =
  21. 21.0.24 × 2.5 =
  22. 22.0.34 × 0.2 =
  23. 23.0.49 × 2.2 =
  24. 24.0.61 × 3.7 =
  25. 25.2.9 × 1.9 =
  26. 26.0.03 × 3.1 =
  27. 27.0.5 × 3.9 =
  28. 28.0.34 × 0.9 =
  29. 29.6.8 × 0.38 =
  30. 30.0.7 × 0.05 =
  31. 31.3.7 × 0.24 =
  32. 32.1.1 × 0.31 =
  33. 33.0.31 × 1.9 =
  34. 34.7.9 × 1.7 =
  35. 35.8.9 × 0.04 =
  36. 36.0.31 × 2.7 =
  37. 37.7.1 × 2.3 =
  38. 38.2.8 × 0.32 =
  39. 39.6.7 × 3.1 =
  40. 40.3.2 × 1.1 =

Answer key

  1. 1.029
  2. 15.4
  3. 0.966
  4. 5.04
  5. 9.84
  6. 1.088
  7. 1.035
  8. 1.292
  9. 19.72
  10. 1.387
  11. 0.198
  12. 1.476
  13. 2.175
  14. 0.126
  15. 0.564
  16. 0.072
  17. 0.51
  18. 0.115
  19. 0.15
  20. 1.02
  21. 0.6
  22. 0.068
  23. 1.078
  24. 2.257
  25. 5.51
  26. 0.093
  27. 1.95
  28. 0.306
  29. 2.584
  30. 0.035
  31. 0.888
  32. 0.341
  33. 0.589
  34. 13.43
  35. 0.356
  36. 0.837
  37. 16.33
  38. 0.896
  39. 20.77
  40. 3.52

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