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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 80 · 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. 1.0.17 × 3.4 =
  2. 2.5.5 × 0.06 =
  3. 3.9.8 × 2.3 =
  4. 4.0.89 × 3.6 =
  5. 5.7.6 × 1.6 =
  6. 6.0.08 × 3.1 =
  7. 7.9.6 × 0.4 =
  8. 8.3.4 × 0.37 =
  9. 9.0.65 × 1.4 =
  10. 10.2.9 × 1.2 =
  11. 11.6.2 × 0.22 =
  12. 12.0.18 × 0.5 =
  13. 13.0.91 × 3.8 =
  14. 14.0.72 × 1.4 =
  15. 15.2.8 × 0.15 =
  16. 16.0.21 × 3.8 =
  17. 17.2.1 × 0.04 =
  18. 18.3.8 × 0.8 =
  19. 19.7.9 × 1.6 =
  20. 20.0.12 × 3.4 =
  21. 21.0.66 × 2.3 =
  22. 22.0.57 × 3.1 =
  23. 23.1.1 × 0.3 =
  24. 24.7.8 × 0.21 =
  25. 25.0.37 × 2.4 =
  26. 26.9.2 × 3.5 =
  27. 27.0.63 × 0.2 =
  28. 28.9.6 × 0.7 =
  29. 29.0.7 × 0.04 =
  30. 30.1.9 × 0.34 =
  31. 31.1.5 × 1.3 =
  32. 32.8.1 × 1.2 =
  33. 33.1.1 × 3.5 =
  34. 34.3.1 × 0.33 =
  35. 35.0.26 × 3.2 =
  36. 36.0.59 × 3.7 =
  37. 37.0.27 × 0.7 =
  38. 38.1.9 × 1.1 =
  39. 39.0.73 × 3.8 =
  40. 40.0.18 × 2.5 =

Answer key

  1. 0.578
  2. 0.33
  3. 22.54
  4. 3.204
  5. 12.16
  6. 0.248
  7. 3.84
  8. 1.258
  9. 0.91
  10. 3.48
  11. 1.364
  12. 0.09
  13. 3.458
  14. 1.008
  15. 0.42
  16. 0.798
  17. 0.084
  18. 3.04
  19. 12.64
  20. 0.408
  21. 1.518
  22. 1.767
  23. 0.33
  24. 1.638
  25. 0.888
  26. 32.2
  27. 0.126
  28. 6.72
  29. 0.028
  30. 0.646
  31. 1.95
  32. 9.72
  33. 3.85
  34. 1.023
  35. 0.832
  36. 2.183
  37. 0.189
  38. 2.09
  39. 2.774
  40. 0.45

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