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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 617 · 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. 1.69 × 50 =
  2. 2.55 × 50 =
  3. 3.57 × 50 =
  4. 4.66 × 50 =
  5. 5.24 × 50 =
  6. 6.34 × 50 =
  7. 7.29 × 50 =
  8. 8.66 × 50 =
  9. 9.80 × 5 =
  10. 10.77 × 50 =
  11. 11.81 × 5 =
  12. 12.63 × 5 =
  13. 13.25 × 50 =
  14. 14.39 × 5 =
  15. 15.95 × 50 =
  16. 16.66 × 5 =
  17. 17.61 × 5 =
  18. 18.28 × 5 =
  19. 19.49 × 5 =
  20. 20.55 × 50 =
  21. 21.27 × 50 =
  22. 22.46 × 50 =
  23. 23.67 × 50 =
  24. 24.24 × 5 =
  25. 25.38 × 50 =
  26. 26.25 × 5 =
  27. 27.84 × 50 =
  28. 28.89 × 5 =
  29. 29.20 × 50 =
  30. 30.42 × 50 =
  31. 31.73 × 50 =
  32. 32.74 × 50 =
  33. 33.88 × 5 =
  34. 34.49 × 5 =
  35. 35.72 × 5 =
  36. 36.83 × 50 =
  37. 37.33 × 5 =
  38. 38.55 × 50 =
  39. 39.86 × 5 =
  40. 40.97 × 50 =

Answer key

  1. 3450
  2. 2750
  3. 2850
  4. 3300
  5. 1200
  6. 1700
  7. 1450
  8. 3300
  9. 400
  10. 3850
  11. 405
  12. 315
  13. 1250
  14. 195
  15. 4750
  16. 330
  17. 305
  18. 140
  19. 245
  20. 2750
  21. 1350
  22. 2300
  23. 3350
  24. 120
  25. 1900
  26. 125
  27. 4200
  28. 445
  29. 1000
  30. 2100
  31. 3650
  32. 3700
  33. 440
  34. 245
  35. 360
  36. 4150
  37. 165
  38. 2750
  39. 430
  40. 4850

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