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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 6 · 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. 1.6.8 × 0.21 =
  2. 2.0.91 × 0.3 =
  3. 3.0.41 × 1.2 =
  4. 4.0.41 × 3.9 =
  5. 5.3.5 × 0.08 =
  6. 6.0.6 × 1.1 =
  7. 7.1.7 × 0.27 =
  8. 8.0.75 × 0.6 =
  9. 9.0.03 × 3.9 =
  10. 10.0.76 × 1.9 =
  11. 11.3.4 × 0.8 =
  12. 12.3.5 × 0.8 =
  13. 13.0.71 × 1.7 =
  14. 14.5.9 × 2.7 =
  15. 15.1.1 × 2.4 =
  16. 16.0.17 × 0.2 =
  17. 17.9.7 × 3.9 =
  18. 18.0.83 × 0.8 =
  19. 19.6.9 × 0.21 =
  20. 20.8.6 × 0.4 =
  21. 21.5.8 × 1.2 =
  22. 22.0.9 × 3.5 =
  23. 23.1.4 × 3.9 =
  24. 24.0.12 × 3.2 =
  25. 25.0.47 × 3.9 =
  26. 26.6.1 × 0.22 =
  27. 27.9.1 × 0.7 =
  28. 28.3.6 × 0.9 =
  29. 29.2.7 × 0.17 =
  30. 30.0.81 × 2.1 =
  31. 31.2.6 × 0.09 =
  32. 32.0.05 × 2.4 =
  33. 33.5.6 × 2.9 =
  34. 34.0.25 × 3.5 =
  35. 35.0.33 × 1.2 =
  36. 36.9.3 × 0.5 =
  37. 37.0.17 × 0.9 =
  38. 38.7.9 × 0.16 =
  39. 39.0.06 × 2.9 =
  40. 40.0.21 × 1.2 =

Answer key

  1. 1.428
  2. 0.273
  3. 0.492
  4. 1.599
  5. 0.28
  6. 0.66
  7. 0.459
  8. 0.45
  9. 0.117
  10. 1.444
  11. 2.72
  12. 2.8
  13. 1.207
  14. 15.93
  15. 2.64
  16. 0.034
  17. 37.83
  18. 0.664
  19. 1.449
  20. 3.44
  21. 6.96
  22. 3.15
  23. 5.46
  24. 0.384
  25. 1.833
  26. 1.342
  27. 6.37
  28. 3.24
  29. 0.459
  30. 1.701
  31. 0.234
  32. 0.12
  33. 16.24
  34. 0.875
  35. 0.396
  36. 4.65
  37. 0.153
  38. 1.264
  39. 0.174
  40. 0.252

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