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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 900 · 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. 1.18 × 50 =
  2. 2.21 × 50 =
  3. 3.77 × 50 =
  4. 4.83 × 5 =
  5. 5.36 × 5 =
  6. 6.70 × 50 =
  7. 7.29 × 5 =
  8. 8.73 × 5 =
  9. 9.27 × 5 =
  10. 10.40 × 50 =
  11. 11.71 × 5 =
  12. 12.33 × 5 =
  13. 13.33 × 5 =
  14. 14.70 × 50 =
  15. 15.84 × 50 =
  16. 16.45 × 5 =
  17. 17.46 × 50 =
  18. 18.64 × 50 =
  19. 19.24 × 5 =
  20. 20.83 × 50 =
  21. 21.89 × 50 =
  22. 22.20 × 5 =
  23. 23.76 × 5 =
  24. 24.88 × 50 =
  25. 25.47 × 5 =
  26. 26.54 × 50 =
  27. 27.71 × 50 =
  28. 28.89 × 5 =
  29. 29.87 × 5 =
  30. 30.74 × 5 =
  31. 31.35 × 50 =
  32. 32.57 × 50 =
  33. 33.31 × 50 =
  34. 34.91 × 50 =
  35. 35.15 × 50 =
  36. 36.98 × 5 =
  37. 37.22 × 5 =
  38. 38.36 × 5 =
  39. 39.79 × 5 =
  40. 40.34 × 50 =

Answer key

  1. 900
  2. 1050
  3. 3850
  4. 415
  5. 180
  6. 3500
  7. 145
  8. 365
  9. 135
  10. 2000
  11. 355
  12. 165
  13. 165
  14. 3500
  15. 4200
  16. 225
  17. 2300
  18. 3200
  19. 120
  20. 4150
  21. 4450
  22. 100
  23. 380
  24. 4400
  25. 235
  26. 2700
  27. 3550
  28. 445
  29. 435
  30. 370
  31. 1750
  32. 2850
  33. 1550
  34. 4550
  35. 750
  36. 490
  37. 110
  38. 180
  39. 395
  40. 1700

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