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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 8 · 40 questions
TalentJR

The fast method (Halve first): Halve the number. × 5: multiply the half by 10. × 50: multiply the half by 100. Odd number? Its half ends in .5 — 43 → 21.5 — and × 10 moves the point: 215.

NameDateTime takenScore ___ / 40
  1. 1.61 × 5 =
  2. 2.85 × 5 =
  3. 3.15 × 50 =
  4. 4.17 × 50 =
  5. 5.55 × 5 =
  6. 6.55 × 5 =
  7. 7.56 × 5 =
  8. 8.40 × 5 =
  9. 9.56 × 50 =
  10. 10.18 × 50 =
  11. 11.55 × 50 =
  12. 12.78 × 50 =
  13. 13.17 × 50 =
  14. 14.45 × 5 =
  15. 15.28 × 50 =
  16. 16.69 × 5 =
  17. 17.97 × 50 =
  18. 18.81 × 5 =
  19. 19.76 × 50 =
  20. 20.52 × 50 =
  21. 21.12 × 50 =
  22. 22.41 × 50 =
  23. 23.34 × 50 =
  24. 24.51 × 50 =
  25. 25.35 × 50 =
  26. 26.72 × 5 =
  27. 27.89 × 50 =
  28. 28.81 × 50 =
  29. 29.58 × 5 =
  30. 30.95 × 50 =
  31. 31.39 × 50 =
  32. 32.39 × 5 =
  33. 33.55 × 5 =
  34. 34.83 × 5 =
  35. 35.91 × 5 =
  36. 36.96 × 50 =
  37. 37.20 × 5 =
  38. 38.81 × 50 =
  39. 39.24 × 5 =
  40. 40.71 × 50 =

Answer key

  1. 305
  2. 425
  3. 750
  4. 850
  5. 275
  6. 275
  7. 280
  8. 200
  9. 2800
  10. 900
  11. 2750
  12. 3900
  13. 850
  14. 225
  15. 1400
  16. 345
  17. 4850
  18. 405
  19. 3800
  20. 2600
  21. 600
  22. 2050
  23. 1700
  24. 2550
  25. 1750
  26. 360
  27. 4450
  28. 4050
  29. 290
  30. 4750
  31. 1950
  32. 195
  33. 275
  34. 415
  35. 455
  36. 4800
  37. 100
  38. 4050
  39. 120
  40. 3550

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