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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 57 · 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. 1.0.03 × 0.4 =
  2. 2.0.2 × 0.18 =
  3. 3.6.8 × 0.3 =
  4. 4.5.8 × 1.6 =
  5. 5.3.1 × 2.9 =
  6. 6.0.14 × 3.5 =
  7. 7.0.15 × 0.9 =
  8. 8.0.67 × 2.7 =
  9. 9.5.2 × 0.17 =
  10. 10.8.2 × 0.12 =
  11. 11.0.96 × 2.7 =
  12. 12.0.3 × 0.5 =
  13. 13.6.5 × 1.1 =
  14. 14.9.5 × 2.6 =
  15. 15.0.25 × 0.2 =
  16. 16.8.1 × 0.24 =
  17. 17.6.1 × 3.4 =
  18. 18.1.8 × 2.7 =
  19. 19.0.63 × 3.4 =
  20. 20.0.14 × 3.5 =
  21. 21.0.16 × 0.4 =
  22. 22.0.3 × 0.29 =
  23. 23.6.6 × 0.03 =
  24. 24.0.81 × 0.4 =
  25. 25.0.32 × 0.5 =
  26. 26.2.8 × 2.1 =
  27. 27.0.38 × 2.2 =
  28. 28.1.2 × 3.3 =
  29. 29.9.5 × 2.1 =
  30. 30.9.1 × 2.2 =
  31. 31.3.1 × 0.21 =
  32. 32.3.9 × 0.3 =
  33. 33.0.76 × 3.1 =
  34. 34.3.1 × 0.21 =
  35. 35.7.8 × 0.33 =
  36. 36.0.66 × 0.3 =
  37. 37.5.7 × 2.2 =
  38. 38.8.7 × 0.15 =
  39. 39.0.71 × 3.6 =
  40. 40.0.02 × 3.3 =

Answer key

  1. 0.012
  2. 0.036
  3. 2.04
  4. 9.28
  5. 8.99
  6. 0.49
  7. 0.135
  8. 1.809
  9. 0.884
  10. 0.984
  11. 2.592
  12. 0.15
  13. 7.15
  14. 24.7
  15. 0.05
  16. 1.944
  17. 20.74
  18. 4.86
  19. 2.142
  20. 0.49
  21. 0.064
  22. 0.087
  23. 0.198
  24. 0.324
  25. 0.16
  26. 5.88
  27. 0.836
  28. 3.96
  29. 19.95
  30. 20.02
  31. 0.651
  32. 1.17
  33. 2.356
  34. 0.651
  35. 2.574
  36. 0.198
  37. 12.54
  38. 1.305
  39. 2.556
  40. 0.066

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