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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 801 · 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. 1.0.84 × 2.2 =
  2. 2.4.2 × 3.1 =
  3. 3.0.49 × 0.6 =
  4. 4.0.42 × 0.8 =
  5. 5.0.8 × 0.08 =
  6. 6.0.23 × 3.1 =
  7. 7.6.7 × 0.31 =
  8. 8.0.25 × 3.3 =
  9. 9.0.75 × 1.4 =
  10. 10.0.11 × 3.1 =
  11. 11.4.1 × 0.11 =
  12. 12.1.6 × 0.38 =
  13. 13.0.21 × 0.8 =
  14. 14.0.75 × 0.7 =
  15. 15.5.4 × 0.36 =
  16. 16.7.8 × 0.5 =
  17. 17.3.3 × 0.13 =
  18. 18.0.08 × 0.2 =
  19. 19.0.65 × 0.3 =
  20. 20.0.15 × 3.6 =
  21. 21.5.9 × 0.21 =
  22. 22.0.41 × 0.3 =
  23. 23.0.29 × 2.2 =
  24. 24.3.2 × 0.05 =
  25. 25.0.65 × 0.4 =
  26. 26.0.71 × 0.7 =
  27. 27.5.5 × 0.7 =
  28. 28.0.29 × 1.9 =
  29. 29.0.72 × 3.1 =
  30. 30.2.9 × 0.13 =
  31. 31.1.6 × 3.9 =
  32. 32.0.48 × 1.6 =
  33. 33.6.6 × 0.39 =
  34. 34.3.3 × 0.19 =
  35. 35.0.33 × 1.1 =
  36. 36.9.4 × 0.12 =
  37. 37.0.64 × 2.8 =
  38. 38.0.64 × 1.1 =
  39. 39.0.19 × 1.5 =
  40. 40.0.8 × 0.03 =

Answer key

  1. 1.848
  2. 13.02
  3. 0.294
  4. 0.336
  5. 0.064
  6. 0.713
  7. 2.077
  8. 0.825
  9. 1.05
  10. 0.341
  11. 0.451
  12. 0.608
  13. 0.168
  14. 0.525
  15. 1.944
  16. 3.9
  17. 0.429
  18. 0.016
  19. 0.195
  20. 0.54
  21. 1.239
  22. 0.123
  23. 0.638
  24. 0.16
  25. 0.26
  26. 0.497
  27. 3.85
  28. 0.551
  29. 2.232
  30. 0.377
  31. 6.24
  32. 0.768
  33. 2.574
  34. 0.627
  35. 0.363
  36. 1.128
  37. 1.792
  38. 0.704
  39. 0.285
  40. 0.024

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