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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 530 · 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. 1.0.97 × 2.9 =
  2. 2.0.77 × 0.9 =
  3. 3.9.8 × 0.05 =
  4. 4.0.71 × 1.6 =
  5. 5.0.65 × 1.7 =
  6. 6.0.73 × 3.1 =
  7. 7.0.67 × 3.1 =
  8. 8.0.16 × 0.9 =
  9. 9.5.9 × 0.05 =
  10. 10.0.21 × 3.5 =
  11. 11.0.28 × 2.6 =
  12. 12.7.9 × 0.07 =
  13. 13.9.6 × 3.5 =
  14. 14.0.2 × 0.11 =
  15. 15.3.8 × 2.8 =
  16. 16.9.9 × 2.2 =
  17. 17.0.8 × 1.1 =
  18. 18.0.89 × 0.8 =
  19. 19.6.9 × 1.4 =
  20. 20.5.9 × 0.8 =
  21. 21.6.1 × 0.4 =
  22. 22.0.36 × 0.4 =
  23. 23.9.6 × 0.7 =
  24. 24.0.29 × 0.7 =
  25. 25.0.88 × 0.7 =
  26. 26.4.1 × 0.36 =
  27. 27.0.79 × 0.5 =
  28. 28.7.7 × 0.24 =
  29. 29.0.51 × 0.9 =
  30. 30.0.87 × 0.4 =
  31. 31.0.87 × 0.2 =
  32. 32.0.31 × 2.1 =
  33. 33.2.7 × 0.21 =
  34. 34.0.61 × 0.6 =
  35. 35.0.17 × 2.5 =
  36. 36.4.4 × 0.21 =
  37. 37.0.98 × 1.2 =
  38. 38.0.34 × 0.8 =
  39. 39.0.96 × 2.2 =
  40. 40.0.5 × 0.29 =

Answer key

  1. 2.813
  2. 0.693
  3. 0.49
  4. 1.136
  5. 1.105
  6. 2.263
  7. 2.077
  8. 0.144
  9. 0.295
  10. 0.735
  11. 0.728
  12. 0.553
  13. 33.6
  14. 0.022
  15. 10.64
  16. 21.78
  17. 0.88
  18. 0.712
  19. 9.66
  20. 4.72
  21. 2.44
  22. 0.144
  23. 6.72
  24. 0.203
  25. 0.616
  26. 1.476
  27. 0.395
  28. 1.848
  29. 0.459
  30. 0.348
  31. 0.174
  32. 0.651
  33. 0.567
  34. 0.366
  35. 0.425
  36. 0.924
  37. 1.176
  38. 0.272
  39. 2.112
  40. 0.145

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