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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 550 · 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. 1.8.5 × 2.7 =
  2. 2.0.98 × 1.4 =
  3. 3.0.86 × 3.4 =
  4. 4.2.9 × 0.15 =
  5. 5.0.41 × 1.7 =
  6. 6.8.4 × 2.2 =
  7. 7.0.21 × 2.4 =
  8. 8.0.34 × 1.1 =
  9. 9.0.77 × 3.6 =
  10. 10.2.1 × 0.16 =
  11. 11.0.11 × 3.1 =
  12. 12.0.51 × 2.1 =
  13. 13.4.9 × 2.7 =
  14. 14.0.4 × 0.22 =
  15. 15.6.1 × 0.35 =
  16. 16.8.5 × 0.33 =
  17. 17.0.71 × 3.1 =
  18. 18.0.81 × 3.8 =
  19. 19.0.6 × 0.09 =
  20. 20.0.23 × 0.8 =
  21. 21.0.89 × 0.8 =
  22. 22.0.85 × 2.3 =
  23. 23.2.2 × 0.2 =
  24. 24.2.9 × 0.12 =
  25. 25.9.1 × 2.5 =
  26. 26.1.8 × 0.03 =
  27. 27.4.1 × 2.2 =
  28. 28.8.8 × 0.07 =
  29. 29.0.12 × 1.5 =
  30. 30.7.6 × 0.15 =
  31. 31.0.31 × 1.3 =
  32. 32.0.02 × 1.9 =
  33. 33.0.55 × 1.6 =
  34. 34.0.96 × 0.6 =
  35. 35.2.5 × 0.14 =
  36. 36.9.4 × 3.1 =
  37. 37.5.8 × 0.21 =
  38. 38.2.1 × 0.08 =
  39. 39.0.09 × 3.5 =
  40. 40.4.2 × 0.03 =

Answer key

  1. 22.95
  2. 1.372
  3. 2.924
  4. 0.435
  5. 0.697
  6. 18.48
  7. 0.504
  8. 0.374
  9. 2.772
  10. 0.336
  11. 0.341
  12. 1.071
  13. 13.23
  14. 0.088
  15. 2.135
  16. 2.805
  17. 2.201
  18. 3.078
  19. 0.054
  20. 0.184
  21. 0.712
  22. 1.955
  23. 0.44
  24. 0.348
  25. 22.75
  26. 0.054
  27. 9.02
  28. 0.616
  29. 0.18
  30. 1.14
  31. 0.403
  32. 0.038
  33. 0.88
  34. 0.576
  35. 0.35
  36. 29.14
  37. 1.218
  38. 0.168
  39. 0.315
  40. 0.126

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