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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 671 · 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. 1.3.1 × 0.35 =
  2. 2.0.51 × 0.5 =
  3. 3.0.71 × 1.1 =
  4. 4.0.02 × 1.7 =
  5. 5.3.2 × 1.2 =
  6. 6.2.9 × 0.06 =
  7. 7.3.7 × 2.5 =
  8. 8.0.65 × 0.9 =
  9. 9.9.8 × 2.1 =
  10. 10.2.6 × 0.9 =
  11. 11.9.9 × 0.8 =
  12. 12.1.5 × 0.6 =
  13. 13.8.1 × 0.31 =
  14. 14.0.51 × 1.6 =
  15. 15.0.29 × 0.6 =
  16. 16.5.3 × 3.1 =
  17. 17.0.17 × 2.6 =
  18. 18.4.2 × 3.2 =
  19. 19.3.9 × 0.02 =
  20. 20.0.99 × 0.7 =
  21. 21.0.57 × 0.9 =
  22. 22.0.42 × 0.8 =
  23. 23.0.27 × 0.4 =
  24. 24.0.28 × 1.1 =
  25. 25.4.6 × 3.1 =
  26. 26.0.8 × 0.28 =
  27. 27.4.4 × 0.32 =
  28. 28.0.05 × 0.3 =
  29. 29.0.44 × 0.5 =
  30. 30.0.11 × 3.3 =
  31. 31.0.53 × 0.6 =
  32. 32.4.1 × 0.14 =
  33. 33.0.78 × 2.1 =
  34. 34.0.92 × 1.3 =
  35. 35.0.32 × 1.3 =
  36. 36.0.87 × 1.2 =
  37. 37.4.9 × 0.4 =
  38. 38.9.2 × 0.05 =
  39. 39.0.18 × 2.2 =
  40. 40.0.69 × 0.9 =

Answer key

  1. 1.085
  2. 0.255
  3. 0.781
  4. 0.034
  5. 3.84
  6. 0.174
  7. 9.25
  8. 0.585
  9. 20.58
  10. 2.34
  11. 7.92
  12. 0.9
  13. 2.511
  14. 0.816
  15. 0.174
  16. 16.43
  17. 0.442
  18. 13.44
  19. 0.078
  20. 0.693
  21. 0.513
  22. 0.336
  23. 0.108
  24. 0.308
  25. 14.26
  26. 0.224
  27. 1.408
  28. 0.015
  29. 0.22
  30. 0.363
  31. 0.318
  32. 0.574
  33. 1.638
  34. 1.196
  35. 0.416
  36. 1.044
  37. 1.96
  38. 0.46
  39. 0.396
  40. 0.621

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