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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 123 · 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. 1.4.2 × 0.4 =
  2. 2.0.44 × 3.7 =
  3. 3.1.9 × 1.1 =
  4. 4.1.9 × 0.02 =
  5. 5.9.1 × 0.28 =
  6. 6.5.1 × 0.21 =
  7. 7.7.3 × 0.09 =
  8. 8.5.7 × 0.21 =
  9. 9.4.5 × 0.24 =
  10. 10.0.31 × 0.7 =
  11. 11.8.9 × 0.24 =
  12. 12.9.5 × 0.27 =
  13. 13.5.4 × 0.34 =
  14. 14.2.2 × 0.4 =
  15. 15.0.31 × 2.1 =
  16. 16.0.17 × 3.7 =
  17. 17.9.3 × 0.15 =
  18. 18.3.8 × 3.4 =
  19. 19.0.06 × 2.8 =
  20. 20.3.8 × 2.8 =
  21. 21.0.55 × 0.9 =
  22. 22.0.11 × 3.8 =
  23. 23.5.8 × 2.3 =
  24. 24.0.04 × 3.4 =
  25. 25.4.2 × 0.06 =
  26. 26.3.5 × 0.08 =
  27. 27.5.8 × 0.37 =
  28. 28.0.44 × 1.1 =
  29. 29.5.9 × 0.8 =
  30. 30.0.98 × 2.1 =
  31. 31.7.3 × 0.18 =
  32. 32.0.3 × 1.1 =
  33. 33.8.3 × 0.2 =
  34. 34.2.4 × 3.9 =
  35. 35.0.61 × 3.4 =
  36. 36.0.2 × 0.17 =
  37. 37.0.2 × 0.08 =
  38. 38.0.58 × 2.3 =
  39. 39.0.02 × 2.1 =
  40. 40.8.9 × 0.21 =

Answer key

  1. 1.68
  2. 1.628
  3. 2.09
  4. 0.038
  5. 2.548
  6. 1.071
  7. 0.657
  8. 1.197
  9. 1.08
  10. 0.217
  11. 2.136
  12. 2.565
  13. 1.836
  14. 0.88
  15. 0.651
  16. 0.629
  17. 1.395
  18. 12.92
  19. 0.168
  20. 10.64
  21. 0.495
  22. 0.418
  23. 13.34
  24. 0.136
  25. 0.252
  26. 0.28
  27. 2.146
  28. 0.484
  29. 4.72
  30. 2.058
  31. 1.314
  32. 0.33
  33. 1.66
  34. 9.36
  35. 2.074
  36. 0.034
  37. 0.016
  38. 1.334
  39. 0.042
  40. 1.869

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