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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 999 · 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. 1.0.04 × 0.2 =
  2. 2.0.07 × 1.9 =
  3. 3.0.64 × 0.6 =
  4. 4.0.35 × 3.6 =
  5. 5.9.2 × 0.19 =
  6. 6.6.6 × 1.4 =
  7. 7.5.1 × 3.1 =
  8. 8.8.7 × 1.1 =
  9. 9.7.9 × 0.08 =
  10. 10.0.64 × 0.8 =
  11. 11.5.8 × 0.24 =
  12. 12.0.81 × 0.5 =
  13. 13.0.75 × 2.1 =
  14. 14.0.09 × 1.3 =
  15. 15.0.21 × 0.3 =
  16. 16.3.7 × 1.2 =
  17. 17.5.3 × 2.1 =
  18. 18.0.99 × 1.6 =
  19. 19.9.4 × 2.5 =
  20. 20.9.9 × 0.07 =
  21. 21.0.29 × 1.1 =
  22. 22.2.1 × 1.5 =
  23. 23.0.64 × 0.8 =
  24. 24.3.4 × 0.3 =
  25. 25.0.05 × 3.9 =
  26. 26.1.6 × 3.1 =
  27. 27.0.14 × 0.6 =
  28. 28.0.43 × 3.5 =
  29. 29.5.8 × 1.1 =
  30. 30.1.6 × 0.13 =
  31. 31.0.7 × 3.9 =
  32. 32.9.1 × 0.37 =
  33. 33.0.81 × 0.9 =
  34. 34.0.65 × 1.4 =
  35. 35.5.1 × 2.5 =
  36. 36.2.1 × 3.9 =
  37. 37.0.44 × 1.5 =
  38. 38.8.8 × 0.03 =
  39. 39.0.23 × 1.7 =
  40. 40.0.41 × 0.7 =

Answer key

  1. 0.008
  2. 0.133
  3. 0.384
  4. 1.26
  5. 1.748
  6. 9.24
  7. 15.81
  8. 9.57
  9. 0.632
  10. 0.512
  11. 1.392
  12. 0.405
  13. 1.575
  14. 0.117
  15. 0.063
  16. 4.44
  17. 11.13
  18. 1.584
  19. 23.5
  20. 0.693
  21. 0.319
  22. 3.15
  23. 0.512
  24. 1.02
  25. 0.195
  26. 4.96
  27. 0.084
  28. 1.505
  29. 6.38
  30. 0.208
  31. 2.73
  32. 3.367
  33. 0.729
  34. 0.91
  35. 12.75
  36. 8.19
  37. 0.66
  38. 0.264
  39. 0.391
  40. 0.287

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