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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 899 · 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. 1.54 × 50 =
  2. 2.98 × 50 =
  3. 3.93 × 5 =
  4. 4.12 × 5 =
  5. 5.50 × 5 =
  6. 6.60 × 5 =
  7. 7.14 × 5 =
  8. 8.21 × 50 =
  9. 9.79 × 50 =
  10. 10.32 × 5 =
  11. 11.78 × 50 =
  12. 12.26 × 50 =
  13. 13.24 × 50 =
  14. 14.73 × 50 =
  15. 15.75 × 5 =
  16. 16.13 × 50 =
  17. 17.15 × 5 =
  18. 18.22 × 5 =
  19. 19.16 × 5 =
  20. 20.56 × 50 =
  21. 21.19 × 50 =
  22. 22.93 × 5 =
  23. 23.43 × 5 =
  24. 24.85 × 5 =
  25. 25.71 × 5 =
  26. 26.75 × 5 =
  27. 27.34 × 5 =
  28. 28.34 × 50 =
  29. 29.48 × 5 =
  30. 30.19 × 5 =
  31. 31.20 × 5 =
  32. 32.64 × 5 =
  33. 33.50 × 50 =
  34. 34.97 × 50 =
  35. 35.86 × 50 =
  36. 36.30 × 5 =
  37. 37.40 × 5 =
  38. 38.20 × 50 =
  39. 39.87 × 50 =
  40. 40.84 × 5 =

Answer key

  1. 2700
  2. 4900
  3. 465
  4. 60
  5. 250
  6. 300
  7. 70
  8. 1050
  9. 3950
  10. 160
  11. 3900
  12. 1300
  13. 1200
  14. 3650
  15. 375
  16. 650
  17. 75
  18. 110
  19. 80
  20. 2800
  21. 950
  22. 465
  23. 215
  24. 425
  25. 355
  26. 375
  27. 170
  28. 1700
  29. 240
  30. 95
  31. 100
  32. 320
  33. 2500
  34. 4850
  35. 4300
  36. 150
  37. 200
  38. 1000
  39. 4350
  40. 420

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