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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 877 · 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. 1.30 × 50 =
  2. 2.71 × 5 =
  3. 3.14 × 50 =
  4. 4.59 × 50 =
  5. 5.70 × 50 =
  6. 6.57 × 5 =
  7. 7.60 × 5 =
  8. 8.80 × 5 =
  9. 9.35 × 50 =
  10. 10.55 × 50 =
  11. 11.25 × 5 =
  12. 12.34 × 50 =
  13. 13.83 × 50 =
  14. 14.42 × 50 =
  15. 15.67 × 50 =
  16. 16.34 × 50 =
  17. 17.16 × 50 =
  18. 18.25 × 5 =
  19. 19.27 × 50 =
  20. 20.73 × 5 =
  21. 21.36 × 50 =
  22. 22.71 × 50 =
  23. 23.87 × 50 =
  24. 24.20 × 5 =
  25. 25.75 × 50 =
  26. 26.30 × 50 =
  27. 27.33 × 5 =
  28. 28.41 × 50 =
  29. 29.22 × 50 =
  30. 30.74 × 50 =
  31. 31.81 × 50 =
  32. 32.89 × 5 =
  33. 33.82 × 5 =
  34. 34.55 × 50 =
  35. 35.84 × 5 =
  36. 36.17 × 50 =
  37. 37.33 × 5 =
  38. 38.85 × 5 =
  39. 39.51 × 5 =
  40. 40.66 × 5 =

Answer key

  1. 1500
  2. 355
  3. 700
  4. 2950
  5. 3500
  6. 285
  7. 300
  8. 400
  9. 1750
  10. 2750
  11. 125
  12. 1700
  13. 4150
  14. 2100
  15. 3350
  16. 1700
  17. 800
  18. 125
  19. 1350
  20. 365
  21. 1800
  22. 3550
  23. 4350
  24. 100
  25. 3750
  26. 1500
  27. 165
  28. 2050
  29. 1100
  30. 3700
  31. 4050
  32. 445
  33. 410
  34. 2750
  35. 420
  36. 850
  37. 165
  38. 425
  39. 255
  40. 330

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