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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 621 · 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. 1.0.36 × 2.8 =
  2. 2.5.1 × 0.21 =
  3. 3.1.7 × 0.24 =
  4. 4.0.41 × 2.1 =
  5. 5.0.13 × 2.4 =
  6. 6.5.5 × 3.6 =
  7. 7.0.5 × 0.11 =
  8. 8.0.91 × 1.1 =
  9. 9.2.3 × 0.13 =
  10. 10.8.2 × 1.2 =
  11. 11.0.87 × 0.3 =
  12. 12.9.1 × 0.31 =
  13. 13.4.1 × 1.1 =
  14. 14.0.33 × 3.4 =
  15. 15.0.89 × 2.3 =
  16. 16.8.4 × 2.6 =
  17. 17.5.7 × 3.4 =
  18. 18.0.58 × 1.2 =
  19. 19.5.8 × 1.8 =
  20. 20.4.6 × 3.6 =
  21. 21.0.4 × 0.37 =
  22. 22.1.9 × 3.9 =
  23. 23.0.96 × 2.2 =
  24. 24.0.42 × 0.3 =
  25. 25.0.41 × 0.5 =
  26. 26.0.54 × 0.6 =
  27. 27.4.4 × 0.18 =
  28. 28.9.6 × 0.9 =
  29. 29.0.45 × 2.6 =
  30. 30.0.38 × 0.3 =
  31. 31.0.89 × 0.4 =
  32. 32.1.1 × 0.03 =
  33. 33.9.5 × 0.03 =
  34. 34.0.11 × 0.9 =
  35. 35.8.5 × 2.6 =
  36. 36.3.7 × 1.6 =
  37. 37.0.19 × 3.7 =
  38. 38.0.4 × 0.14 =
  39. 39.0.41 × 3.5 =
  40. 40.1.7 × 0.2 =

Answer key

  1. 1.008
  2. 1.071
  3. 0.408
  4. 0.861
  5. 0.312
  6. 19.8
  7. 0.055
  8. 1.001
  9. 0.299
  10. 9.84
  11. 0.261
  12. 2.821
  13. 4.51
  14. 1.122
  15. 2.047
  16. 21.84
  17. 19.38
  18. 0.696
  19. 10.44
  20. 16.56
  21. 0.148
  22. 7.41
  23. 2.112
  24. 0.126
  25. 0.205
  26. 0.324
  27. 0.792
  28. 8.64
  29. 1.17
  30. 0.114
  31. 0.356
  32. 0.033
  33. 0.285
  34. 0.099
  35. 22.1
  36. 5.92
  37. 0.703
  38. 0.056
  39. 1.435
  40. 0.34

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