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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 81 · 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. 1.3.1 × 2.9 =
  2. 2.0.55 × 3.7 =
  3. 3.0.88 × 2.1 =
  4. 4.0.7 × 1.6 =
  5. 5.0.19 × 1.2 =
  6. 6.5.2 × 0.5 =
  7. 7.9.3 × 0.11 =
  8. 8.0.86 × 3.1 =
  9. 9.0.11 × 2.1 =
  10. 10.0.33 × 3.6 =
  11. 11.8.7 × 0.05 =
  12. 12.1.1 × 0.06 =
  13. 13.2.6 × 0.03 =
  14. 14.2.2 × 0.15 =
  15. 15.0.32 × 0.9 =
  16. 16.0.61 × 3.7 =
  17. 17.0.15 × 3.3 =
  18. 18.0.29 × 0.5 =
  19. 19.6.1 × 2.1 =
  20. 20.5.6 × 0.27 =
  21. 21.5.9 × 0.21 =
  22. 22.1.8 × 0.27 =
  23. 23.0.63 × 3.4 =
  24. 24.0.11 × 2.1 =
  25. 25.5.8 × 0.31 =
  26. 26.0.54 × 0.2 =
  27. 27.0.69 × 3.3 =
  28. 28.3.5 × 3.8 =
  29. 29.0.86 × 2.9 =
  30. 30.3.5 × 0.19 =
  31. 31.5.6 × 0.29 =
  32. 32.0.73 × 3.3 =
  33. 33.0.08 × 2.8 =
  34. 34.4.3 × 3.2 =
  35. 35.0.2 × 0.2 =
  36. 36.4.7 × 0.4 =
  37. 37.0.63 × 3.2 =
  38. 38.3.1 × 0.39 =
  39. 39.6.1 × 0.12 =
  40. 40.0.88 × 2.5 =

Answer key

  1. 8.99
  2. 2.035
  3. 1.848
  4. 1.12
  5. 0.228
  6. 2.6
  7. 1.023
  8. 2.666
  9. 0.231
  10. 1.188
  11. 0.435
  12. 0.066
  13. 0.078
  14. 0.33
  15. 0.288
  16. 2.257
  17. 0.495
  18. 0.145
  19. 12.81
  20. 1.512
  21. 1.239
  22. 0.486
  23. 2.142
  24. 0.231
  25. 1.798
  26. 0.108
  27. 2.277
  28. 13.3
  29. 2.494
  30. 0.665
  31. 1.624
  32. 2.409
  33. 0.224
  34. 13.76
  35. 0.04
  36. 1.88
  37. 2.016
  38. 1.209
  39. 0.732
  40. 2.2

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