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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 511 · 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. 1.9.9 × 2.6 =
  2. 2.9.9 × 3.9 =
  3. 3.1.9 × 3.1 =
  4. 4.0.05 × 1.4 =
  5. 5.4.1 × 0.2 =
  6. 6.0.08 × 3.6 =
  7. 7.0.84 × 3.6 =
  8. 8.4.4 × 0.07 =
  9. 9.0.97 × 0.8 =
  10. 10.0.86 × 2.8 =
  11. 11.0.41 × 3.3 =
  12. 12.0.65 × 3.8 =
  13. 13.7.9 × 3.1 =
  14. 14.7.4 × 2.1 =
  15. 15.0.42 × 3.1 =
  16. 16.9.2 × 1.6 =
  17. 17.2.4 × 1.1 =
  18. 18.0.57 × 2.7 =
  19. 19.4.1 × 0.13 =
  20. 20.0.71 × 3.4 =
  21. 21.0.22 × 2.6 =
  22. 22.0.47 × 0.6 =
  23. 23.0.25 × 1.1 =
  24. 24.0.88 × 2.1 =
  25. 25.0.06 × 2.8 =
  26. 26.0.57 × 2.7 =
  27. 27.2.4 × 3.3 =
  28. 28.0.78 × 1.1 =
  29. 29.0.92 × 0.7 =
  30. 30.0.96 × 3.5 =
  31. 31.0.47 × 3.1 =
  32. 32.0.15 × 1.3 =
  33. 33.2.6 × 0.24 =
  34. 34.3.6 × 0.04 =
  35. 35.2.5 × 0.16 =
  36. 36.0.09 × 0.3 =
  37. 37.0.45 × 0.7 =
  38. 38.0.21 × 3.3 =
  39. 39.8.8 × 0.8 =
  40. 40.0.08 × 3.1 =

Answer key

  1. 25.74
  2. 38.61
  3. 5.89
  4. 0.07
  5. 0.82
  6. 0.288
  7. 3.024
  8. 0.308
  9. 0.776
  10. 2.408
  11. 1.353
  12. 2.47
  13. 24.49
  14. 15.54
  15. 1.302
  16. 14.72
  17. 2.64
  18. 1.539
  19. 0.533
  20. 2.414
  21. 0.572
  22. 0.282
  23. 0.275
  24. 1.848
  25. 0.168
  26. 1.539
  27. 7.92
  28. 0.858
  29. 0.644
  30. 3.36
  31. 1.457
  32. 0.195
  33. 0.624
  34. 0.144
  35. 0.4
  36. 0.027
  37. 0.315
  38. 0.693
  39. 7.04
  40. 0.248

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