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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 459 · 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. 1.5.1 × 0.05 =
  2. 2.9.4 × 1.8 =
  3. 3.0.36 × 0.4 =
  4. 4.0.31 × 1.1 =
  5. 5.0.51 × 1.9 =
  6. 6.6.3 × 0.9 =
  7. 7.7.6 × 1.2 =
  8. 8.0.16 × 0.5 =
  9. 9.2.4 × 0.4 =
  10. 10.7.8 × 0.27 =
  11. 11.7.1 × 2.5 =
  12. 12.6.5 × 0.05 =
  13. 13.2.3 × 0.07 =
  14. 14.0.35 × 1.5 =
  15. 15.5.7 × 1.7 =
  16. 16.0.24 × 2.5 =
  17. 17.0.9 × 0.39 =
  18. 18.9.9 × 0.04 =
  19. 19.0.89 × 1.4 =
  20. 20.0.33 × 3.7 =
  21. 21.0.25 × 0.2 =
  22. 22.0.11 × 0.4 =
  23. 23.3.6 × 0.15 =
  24. 24.0.05 × 3.9 =
  25. 25.4.3 × 0.37 =
  26. 26.0.84 × 0.5 =
  27. 27.0.02 × 2.7 =
  28. 28.0.61 × 1.6 =
  29. 29.8.6 × 2.3 =
  30. 30.9.8 × 1.1 =
  31. 31.0.85 × 1.9 =
  32. 32.9.4 × 1.1 =
  33. 33.0.51 × 1.9 =
  34. 34.0.59 × 2.9 =
  35. 35.0.45 × 3.2 =
  36. 36.9.4 × 0.13 =
  37. 37.0.26 × 2.8 =
  38. 38.0.2 × 0.36 =
  39. 39.7.7 × 3.6 =
  40. 40.7.1 × 0.02 =

Answer key

  1. 0.255
  2. 16.92
  3. 0.144
  4. 0.341
  5. 0.969
  6. 5.67
  7. 9.12
  8. 0.08
  9. 0.96
  10. 2.106
  11. 17.75
  12. 0.325
  13. 0.161
  14. 0.525
  15. 9.69
  16. 0.6
  17. 0.351
  18. 0.396
  19. 1.246
  20. 1.221
  21. 0.05
  22. 0.044
  23. 0.54
  24. 0.195
  25. 1.591
  26. 0.42
  27. 0.054
  28. 0.976
  29. 19.78
  30. 10.78
  31. 1.615
  32. 10.34
  33. 0.969
  34. 1.711
  35. 1.44
  36. 1.222
  37. 0.728
  38. 0.072
  39. 27.72
  40. 0.142

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