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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 43 · 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. 1.0.08 × 3.2 =
  2. 2.0.24 × 1.2 =
  3. 3.0.98 × 3.6 =
  4. 4.0.86 × 2.5 =
  5. 5.4.3 × 0.38 =
  6. 6.1.1 × 2.2 =
  7. 7.0.31 × 0.9 =
  8. 8.2.7 × 0.12 =
  9. 9.2.9 × 0.31 =
  10. 10.0.5 × 0.6 =
  11. 11.0.69 × 1.7 =
  12. 12.6.1 × 0.19 =
  13. 13.9.1 × 0.18 =
  14. 14.5.4 × 2.2 =
  15. 15.5.1 × 1.6 =
  16. 16.0.62 × 1.6 =
  17. 17.0.58 × 1.1 =
  18. 18.6.3 × 2.9 =
  19. 19.9.1 × 3.2 =
  20. 20.0.23 × 0.8 =
  21. 21.9.8 × 3.4 =
  22. 22.6.1 × 3.6 =
  23. 23.0.17 × 3.6 =
  24. 24.0.02 × 0.5 =
  25. 25.0.15 × 1.5 =
  26. 26.6.7 × 2.5 =
  27. 27.2.6 × 0.06 =
  28. 28.1.2 × 0.05 =
  29. 29.0.43 × 0.6 =
  30. 30.0.29 × 1.3 =
  31. 31.1.6 × 1.7 =
  32. 32.6.1 × 1.1 =
  33. 33.0.81 × 0.9 =
  34. 34.6.1 × 0.14 =
  35. 35.7.3 × 2.4 =
  36. 36.0.38 × 0.6 =
  37. 37.0.57 × 1.5 =
  38. 38.0.5 × 2.2 =
  39. 39.0.9 × 0.35 =
  40. 40.0.65 × 2.1 =

Answer key

  1. 0.256
  2. 0.288
  3. 3.528
  4. 2.15
  5. 1.634
  6. 2.42
  7. 0.279
  8. 0.324
  9. 0.899
  10. 0.3
  11. 1.173
  12. 1.159
  13. 1.638
  14. 11.88
  15. 8.16
  16. 0.992
  17. 0.638
  18. 18.27
  19. 29.12
  20. 0.184
  21. 33.32
  22. 21.96
  23. 0.612
  24. 0.01
  25. 0.225
  26. 16.75
  27. 0.156
  28. 0.06
  29. 0.258
  30. 0.377
  31. 2.72
  32. 6.71
  33. 0.729
  34. 0.854
  35. 17.52
  36. 0.228
  37. 0.855
  38. 1.1
  39. 0.315
  40. 1.365

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