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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 631 · 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. 1.0.45 × 0.2 =
  2. 2.4.8 × 0.22 =
  3. 3.5.7 × 0.28 =
  4. 4.4.2 × 0.38 =
  5. 5.4.8 × 2.8 =
  6. 6.4.9 × 3.2 =
  7. 7.0.48 × 0.5 =
  8. 8.4.6 × 0.04 =
  9. 9.1.2 × 0.24 =
  10. 10.0.8 × 1.6 =
  11. 11.0.76 × 1.4 =
  12. 12.0.73 × 0.8 =
  13. 13.0.75 × 0.5 =
  14. 14.7.1 × 2.4 =
  15. 15.9.1 × 3.6 =
  16. 16.5.5 × 0.24 =
  17. 17.0.21 × 3.3 =
  18. 18.8.1 × 0.23 =
  19. 19.5.1 × 3.8 =
  20. 20.0.44 × 0.9 =
  21. 21.0.11 × 1.7 =
  22. 22.0.37 × 1.7 =
  23. 23.0.07 × 1.5 =
  24. 24.9.9 × 1.1 =
  25. 25.0.04 × 0.4 =
  26. 26.0.71 × 0.4 =
  27. 27.0.11 × 0.2 =
  28. 28.7.8 × 0.18 =
  29. 29.5.4 × 0.07 =
  30. 30.0.85 × 2.5 =
  31. 31.0.5 × 3.7 =
  32. 32.0.5 × 0.7 =
  33. 33.3.5 × 0.5 =
  34. 34.3.7 × 3.1 =
  35. 35.4.2 × 0.6 =
  36. 36.2.3 × 0.21 =
  37. 37.0.9 × 1.2 =
  38. 38.7.3 × 0.27 =
  39. 39.0.39 × 1.8 =
  40. 40.5.2 × 0.04 =

Answer key

  1. 0.09
  2. 1.056
  3. 1.596
  4. 1.596
  5. 13.44
  6. 15.68
  7. 0.24
  8. 0.184
  9. 0.288
  10. 1.28
  11. 1.064
  12. 0.584
  13. 0.375
  14. 17.04
  15. 32.76
  16. 1.32
  17. 0.693
  18. 1.863
  19. 19.38
  20. 0.396
  21. 0.187
  22. 0.629
  23. 0.105
  24. 10.89
  25. 0.016
  26. 0.284
  27. 0.022
  28. 1.404
  29. 0.378
  30. 2.125
  31. 1.85
  32. 0.35
  33. 1.75
  34. 11.47
  35. 2.52
  36. 0.483
  37. 1.08
  38. 1.971
  39. 0.702
  40. 0.208

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