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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 63 · 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. 1.85 × 50 =
  2. 2.62 × 50 =
  3. 3.33 × 50 =
  4. 4.72 × 5 =
  5. 5.90 × 5 =
  6. 6.84 × 5 =
  7. 7.13 × 5 =
  8. 8.60 × 50 =
  9. 9.70 × 5 =
  10. 10.92 × 5 =
  11. 11.53 × 50 =
  12. 12.41 × 5 =
  13. 13.28 × 50 =
  14. 14.79 × 5 =
  15. 15.26 × 5 =
  16. 16.67 × 5 =
  17. 17.94 × 5 =
  18. 18.42 × 5 =
  19. 19.76 × 50 =
  20. 20.78 × 5 =
  21. 21.17 × 5 =
  22. 22.69 × 5 =
  23. 23.21 × 50 =
  24. 24.40 × 5 =
  25. 25.92 × 50 =
  26. 26.16 × 50 =
  27. 27.95 × 5 =
  28. 28.83 × 5 =
  29. 29.18 × 5 =
  30. 30.79 × 50 =
  31. 31.13 × 50 =
  32. 32.38 × 5 =
  33. 33.42 × 5 =
  34. 34.62 × 50 =
  35. 35.71 × 50 =
  36. 36.15 × 50 =
  37. 37.85 × 5 =
  38. 38.51 × 5 =
  39. 39.50 × 50 =
  40. 40.66 × 50 =

Answer key

  1. 4250
  2. 3100
  3. 1650
  4. 360
  5. 450
  6. 420
  7. 65
  8. 3000
  9. 350
  10. 460
  11. 2650
  12. 205
  13. 1400
  14. 395
  15. 130
  16. 335
  17. 470
  18. 210
  19. 3800
  20. 390
  21. 85
  22. 345
  23. 1050
  24. 200
  25. 4600
  26. 800
  27. 475
  28. 415
  29. 90
  30. 3950
  31. 650
  32. 190
  33. 210
  34. 3100
  35. 3550
  36. 750
  37. 425
  38. 255
  39. 2500
  40. 3300

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