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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 557 · 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. 1.7.9 × 2.3 =
  2. 2.0.91 × 1.7 =
  3. 3.9.1 × 0.21 =
  4. 4.0.36 × 0.9 =
  5. 5.3.5 × 0.2 =
  6. 6.0.08 × 3.1 =
  7. 7.0.71 × 1.6 =
  8. 8.0.62 × 0.6 =
  9. 9.0.23 × 0.6 =
  10. 10.1.1 × 0.9 =
  11. 11.3.7 × 1.1 =
  12. 12.0.3 × 3.6 =
  13. 13.0.68 × 2.7 =
  14. 14.0.13 × 2.1 =
  15. 15.0.41 × 1.4 =
  16. 16.0.6 × 0.9 =
  17. 17.0.98 × 2.5 =
  18. 18.0.16 × 2.2 =
  19. 19.0.29 × 3.4 =
  20. 20.0.29 × 3.5 =
  21. 21.2.5 × 0.7 =
  22. 22.0.17 × 2.8 =
  23. 23.0.22 × 1.3 =
  24. 24.0.87 × 1.6 =
  25. 25.0.07 × 1.9 =
  26. 26.0.9 × 0.37 =
  27. 27.0.47 × 3.1 =
  28. 28.0.79 × 3.7 =
  29. 29.1.3 × 0.06 =
  30. 30.8.8 × 1.1 =
  31. 31.7.5 × 0.04 =
  32. 32.0.04 × 3.2 =
  33. 33.6.8 × 1.7 =
  34. 34.6.3 × 3.8 =
  35. 35.0.29 × 3.3 =
  36. 36.2.4 × 0.33 =
  37. 37.3.9 × 0.39 =
  38. 38.0.71 × 1.1 =
  39. 39.2.3 × 0.3 =
  40. 40.4.1 × 0.15 =

Answer key

  1. 18.17
  2. 1.547
  3. 1.911
  4. 0.324
  5. 0.7
  6. 0.248
  7. 1.136
  8. 0.372
  9. 0.138
  10. 0.99
  11. 4.07
  12. 1.08
  13. 1.836
  14. 0.273
  15. 0.574
  16. 0.54
  17. 2.45
  18. 0.352
  19. 0.986
  20. 1.015
  21. 1.75
  22. 0.476
  23. 0.286
  24. 1.392
  25. 0.133
  26. 0.333
  27. 1.457
  28. 2.923
  29. 0.078
  30. 9.68
  31. 0.3
  32. 0.128
  33. 11.56
  34. 23.94
  35. 0.957
  36. 0.792
  37. 1.521
  38. 0.781
  39. 0.69
  40. 0.615

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