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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 770 · 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. 1.3.7 × 0.34 =
  2. 2.0.85 × 3.3 =
  3. 3.0.44 × 3.7 =
  4. 4.4.8 × 0.9 =
  5. 5.0.12 × 3.9 =
  6. 6.7.5 × 3.2 =
  7. 7.1.4 × 0.08 =
  8. 8.1.4 × 0.24 =
  9. 9.3.6 × 1.1 =
  10. 10.4.6 × 1.5 =
  11. 11.0.57 × 3.5 =
  12. 12.5.8 × 2.1 =
  13. 13.4.5 × 0.5 =
  14. 14.0.13 × 1.3 =
  15. 15.0.24 × 0.4 =
  16. 16.0.86 × 1.3 =
  17. 17.0.63 × 2.1 =
  18. 18.0.31 × 0.5 =
  19. 19.0.6 × 0.03 =
  20. 20.3.1 × 0.13 =
  21. 21.0.53 × 2.4 =
  22. 22.5.5 × 0.18 =
  23. 23.6.7 × 2.5 =
  24. 24.0.72 × 2.5 =
  25. 25.0.21 × 1.3 =
  26. 26.0.34 × 2.9 =
  27. 27.0.29 × 0.5 =
  28. 28.3.8 × 1.1 =
  29. 29.0.43 × 3.3 =
  30. 30.0.14 × 0.4 =
  31. 31.6.1 × 1.7 =
  32. 32.2.5 × 0.31 =
  33. 33.0.22 × 3.1 =
  34. 34.0.25 × 0.7 =
  35. 35.7.4 × 0.22 =
  36. 36.8.9 × 2.4 =
  37. 37.9.2 × 0.13 =
  38. 38.6.6 × 2.7 =
  39. 39.1.6 × 0.6 =
  40. 40.3.1 × 3.3 =

Answer key

  1. 1.258
  2. 2.805
  3. 1.628
  4. 4.32
  5. 0.468
  6. 24
  7. 0.112
  8. 0.336
  9. 3.96
  10. 6.9
  11. 1.995
  12. 12.18
  13. 2.25
  14. 0.169
  15. 0.096
  16. 1.118
  17. 1.323
  18. 0.155
  19. 0.018
  20. 0.403
  21. 1.272
  22. 0.99
  23. 16.75
  24. 1.8
  25. 0.273
  26. 0.986
  27. 0.145
  28. 4.18
  29. 1.419
  30. 0.056
  31. 10.37
  32. 0.775
  33. 0.682
  34. 0.175
  35. 1.628
  36. 21.36
  37. 1.196
  38. 17.82
  39. 0.96
  40. 10.23

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