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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 811 · 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. 1.0.2 × 0.02 =
  2. 2.7.4 × 0.17 =
  3. 3.6.1 × 2.9 =
  4. 4.0.51 × 1.1 =
  5. 5.2.1 × 0.7 =
  6. 6.0.8 × 1.7 =
  7. 7.1.5 × 3.7 =
  8. 8.4.4 × 3.8 =
  9. 9.9.3 × 3.1 =
  10. 10.0.04 × 0.5 =
  11. 11.0.33 × 1.1 =
  12. 12.6.7 × 0.37 =
  13. 13.0.34 × 1.1 =
  14. 14.0.61 × 3.5 =
  15. 15.0.08 × 1.4 =
  16. 16.0.98 × 0.2 =
  17. 17.0.33 × 2.5 =
  18. 18.8.1 × 1.2 =
  19. 19.7.2 × 1.9 =
  20. 20.0.84 × 3.9 =
  21. 21.0.57 × 0.2 =
  22. 22.0.36 × 2.1 =
  23. 23.0.71 × 2.8 =
  24. 24.0.42 × 1.1 =
  25. 25.0.33 × 1.1 =
  26. 26.8.4 × 0.32 =
  27. 27.0.5 × 0.5 =
  28. 28.2.1 × 2.8 =
  29. 29.5.1 × 0.34 =
  30. 30.0.88 × 3.2 =
  31. 31.3.1 × 0.7 =
  32. 32.0.38 × 0.4 =
  33. 33.0.15 × 1.1 =
  34. 34.4.6 × 0.09 =
  35. 35.5.4 × 1.3 =
  36. 36.0.31 × 3.5 =
  37. 37.0.37 × 3.5 =
  38. 38.0.97 × 0.3 =
  39. 39.0.07 × 2.4 =
  40. 40.0.77 × 3.1 =

Answer key

  1. 0.004
  2. 1.258
  3. 17.69
  4. 0.561
  5. 1.47
  6. 1.36
  7. 5.55
  8. 16.72
  9. 28.83
  10. 0.02
  11. 0.363
  12. 2.479
  13. 0.374
  14. 2.135
  15. 0.112
  16. 0.196
  17. 0.825
  18. 9.72
  19. 13.68
  20. 3.276
  21. 0.114
  22. 0.756
  23. 1.988
  24. 0.462
  25. 0.363
  26. 2.688
  27. 0.25
  28. 5.88
  29. 1.734
  30. 2.816
  31. 2.17
  32. 0.152
  33. 0.165
  34. 0.414
  35. 7.02
  36. 1.085
  37. 1.295
  38. 0.291
  39. 0.168
  40. 2.387

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