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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 450 · 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 × 0.8 =
  2. 2.9.4 × 0.09 =
  3. 3.2.9 × 0.05 =
  4. 4.6.9 × 0.2 =
  5. 5.0.54 × 2.2 =
  6. 6.3.5 × 1.2 =
  7. 7.0.8 × 3.3 =
  8. 8.0.26 × 3.9 =
  9. 9.6.6 × 0.05 =
  10. 10.0.61 × 2.6 =
  11. 11.0.14 × 1.6 =
  12. 12.0.39 × 3.7 =
  13. 13.1.7 × 2.4 =
  14. 14.7.6 × 1.1 =
  15. 15.0.18 × 0.8 =
  16. 16.0.45 × 3.2 =
  17. 17.0.57 × 0.7 =
  18. 18.1.1 × 1.2 =
  19. 19.0.22 × 1.2 =
  20. 20.1.5 × 0.9 =
  21. 21.0.18 × 2.1 =
  22. 22.0.8 × 0.3 =
  23. 23.0.47 × 2.9 =
  24. 24.8.9 × 3.5 =
  25. 25.7.1 × 1.4 =
  26. 26.0.61 × 1.5 =
  27. 27.0.96 × 1.1 =
  28. 28.5.6 × 0.17 =
  29. 29.1.1 × 1.7 =
  30. 30.0.71 × 2.2 =
  31. 31.0.6 × 3.4 =
  32. 32.0.91 × 0.7 =
  33. 33.0.76 × 2.1 =
  34. 34.5.4 × 1.1 =
  35. 35.4.6 × 0.11 =
  36. 36.0.03 × 0.5 =
  37. 37.0.23 × 1.1 =
  38. 38.9.1 × 0.03 =
  39. 39.3.2 × 0.05 =
  40. 40.0.77 × 0.8 =

Answer key

  1. 0.36
  2. 0.846
  3. 0.145
  4. 1.38
  5. 1.188
  6. 4.2
  7. 2.64
  8. 1.014
  9. 0.33
  10. 1.586
  11. 0.224
  12. 1.443
  13. 4.08
  14. 8.36
  15. 0.144
  16. 1.44
  17. 0.399
  18. 1.32
  19. 0.264
  20. 1.35
  21. 0.378
  22. 0.24
  23. 1.363
  24. 31.15
  25. 9.94
  26. 0.915
  27. 1.056
  28. 0.952
  29. 1.87
  30. 1.562
  31. 2.04
  32. 0.637
  33. 1.596
  34. 5.94
  35. 0.506
  36. 0.015
  37. 0.253
  38. 0.273
  39. 0.16
  40. 0.616

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