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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 667 · 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. 1.0.91 × 3.9 =
  2. 2.0.38 × 2.9 =
  3. 3.0.74 × 1.8 =
  4. 4.5.8 × 1.9 =
  5. 5.2.6 × 1.9 =
  6. 6.0.2 × 2.4 =
  7. 7.0.4 × 2.8 =
  8. 8.4.1 × 0.7 =
  9. 9.0.85 × 3.5 =
  10. 10.0.53 × 3.8 =
  11. 11.0.2 × 1.1 =
  12. 12.0.51 × 2.6 =
  13. 13.4.4 × 0.29 =
  14. 14.0.36 × 0.2 =
  15. 15.0.28 × 1.2 =
  16. 16.0.76 × 1.3 =
  17. 17.0.46 × 1.5 =
  18. 18.2.1 × 0.08 =
  19. 19.0.25 × 2.5 =
  20. 20.4.8 × 3.3 =
  21. 21.1.5 × 0.08 =
  22. 22.9.5 × 3.1 =
  23. 23.8.5 × 0.05 =
  24. 24.1.9 × 0.8 =
  25. 25.7.7 × 0.13 =
  26. 26.0.34 × 3.5 =
  27. 27.0.47 × 0.8 =
  28. 28.6.2 × 2.6 =
  29. 29.0.91 × 0.5 =
  30. 30.5.4 × 0.6 =
  31. 31.5.9 × 1.3 =
  32. 32.9.8 × 0.12 =
  33. 33.6.7 × 0.17 =
  34. 34.0.37 × 1.1 =
  35. 35.8.9 × 0.5 =
  36. 36.0.53 × 0.8 =
  37. 37.0.26 × 0.7 =
  38. 38.8.3 × 1.1 =
  39. 39.6.7 × 0.02 =
  40. 40.0.87 × 0.9 =

Answer key

  1. 3.549
  2. 1.102
  3. 1.332
  4. 11.02
  5. 4.94
  6. 0.48
  7. 1.12
  8. 2.87
  9. 2.975
  10. 2.014
  11. 0.22
  12. 1.326
  13. 1.276
  14. 0.072
  15. 0.336
  16. 0.988
  17. 0.69
  18. 0.168
  19. 0.625
  20. 15.84
  21. 0.12
  22. 29.45
  23. 0.425
  24. 1.52
  25. 1.001
  26. 1.19
  27. 0.376
  28. 16.12
  29. 0.455
  30. 3.24
  31. 7.67
  32. 1.176
  33. 1.139
  34. 0.407
  35. 4.45
  36. 0.424
  37. 0.182
  38. 9.13
  39. 0.134
  40. 0.783

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