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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 452 · 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. 1.25 × 50 =
  2. 2.33 × 5 =
  3. 3.85 × 5 =
  4. 4.96 × 50 =
  5. 5.12 × 5 =
  6. 6.53 × 50 =
  7. 7.79 × 5 =
  8. 8.21 × 5 =
  9. 9.35 × 50 =
  10. 10.33 × 50 =
  11. 11.96 × 50 =
  12. 12.73 × 50 =
  13. 13.60 × 5 =
  14. 14.85 × 5 =
  15. 15.17 × 5 =
  16. 16.32 × 5 =
  17. 17.26 × 5 =
  18. 18.63 × 5 =
  19. 19.74 × 50 =
  20. 20.43 × 5 =
  21. 21.80 × 5 =
  22. 22.36 × 50 =
  23. 23.57 × 50 =
  24. 24.79 × 5 =
  25. 25.75 × 5 =
  26. 26.63 × 5 =
  27. 27.12 × 5 =
  28. 28.19 × 50 =
  29. 29.90 × 5 =
  30. 30.26 × 5 =
  31. 31.42 × 50 =
  32. 32.28 × 5 =
  33. 33.24 × 50 =
  34. 34.73 × 5 =
  35. 35.84 × 5 =
  36. 36.87 × 5 =
  37. 37.72 × 50 =
  38. 38.72 × 5 =
  39. 39.98 × 5 =
  40. 40.43 × 5 =

Answer key

  1. 1250
  2. 165
  3. 425
  4. 4800
  5. 60
  6. 2650
  7. 395
  8. 105
  9. 1750
  10. 1650
  11. 4800
  12. 3650
  13. 300
  14. 425
  15. 85
  16. 160
  17. 130
  18. 315
  19. 3700
  20. 215
  21. 400
  22. 1800
  23. 2850
  24. 395
  25. 375
  26. 315
  27. 60
  28. 950
  29. 450
  30. 130
  31. 2100
  32. 140
  33. 1200
  34. 365
  35. 420
  36. 435
  37. 3600
  38. 360
  39. 490
  40. 215

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