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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 506 · 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. 1.40 × 50 =
  2. 2.60 × 50 =
  3. 3.59 × 50 =
  4. 4.34 × 5 =
  5. 5.31 × 50 =
  6. 6.91 × 50 =
  7. 7.83 × 5 =
  8. 8.84 × 50 =
  9. 9.43 × 50 =
  10. 10.89 × 50 =
  11. 11.42 × 5 =
  12. 12.13 × 50 =
  13. 13.84 × 50 =
  14. 14.34 × 5 =
  15. 15.51 × 50 =
  16. 16.46 × 5 =
  17. 17.35 × 5 =
  18. 18.77 × 5 =
  19. 19.90 × 50 =
  20. 20.93 × 5 =
  21. 21.48 × 5 =
  22. 22.32 × 5 =
  23. 23.96 × 50 =
  24. 24.42 × 5 =
  25. 25.19 × 50 =
  26. 26.59 × 5 =
  27. 27.25 × 50 =
  28. 28.54 × 50 =
  29. 29.70 × 50 =
  30. 30.81 × 50 =
  31. 31.64 × 5 =
  32. 32.64 × 50 =
  33. 33.34 × 50 =
  34. 34.13 × 50 =
  35. 35.69 × 5 =
  36. 36.23 × 50 =
  37. 37.59 × 5 =
  38. 38.66 × 5 =
  39. 39.91 × 5 =
  40. 40.81 × 5 =

Answer key

  1. 2000
  2. 3000
  3. 2950
  4. 170
  5. 1550
  6. 4550
  7. 415
  8. 4200
  9. 2150
  10. 4450
  11. 210
  12. 650
  13. 4200
  14. 170
  15. 2550
  16. 230
  17. 175
  18. 385
  19. 4500
  20. 465
  21. 240
  22. 160
  23. 4800
  24. 210
  25. 950
  26. 295
  27. 1250
  28. 2700
  29. 3500
  30. 4050
  31. 320
  32. 3200
  33. 1700
  34. 650
  35. 345
  36. 1150
  37. 295
  38. 330
  39. 455
  40. 405

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