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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 695 · 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. 1.42 × 50 =
  2. 2.70 × 5 =
  3. 3.21 × 50 =
  4. 4.76 × 50 =
  5. 5.37 × 50 =
  6. 6.57 × 50 =
  7. 7.84 × 50 =
  8. 8.16 × 5 =
  9. 9.54 × 5 =
  10. 10.85 × 5 =
  11. 11.54 × 50 =
  12. 12.89 × 50 =
  13. 13.43 × 5 =
  14. 14.22 × 5 =
  15. 15.54 × 50 =
  16. 16.75 × 5 =
  17. 17.81 × 5 =
  18. 18.38 × 5 =
  19. 19.92 × 50 =
  20. 20.38 × 5 =
  21. 21.18 × 50 =
  22. 22.34 × 5 =
  23. 23.36 × 50 =
  24. 24.35 × 50 =
  25. 25.86 × 5 =
  26. 26.28 × 5 =
  27. 27.16 × 50 =
  28. 28.22 × 50 =
  29. 29.47 × 5 =
  30. 30.82 × 5 =
  31. 31.60 × 5 =
  32. 32.40 × 50 =
  33. 33.26 × 50 =
  34. 34.48 × 50 =
  35. 35.88 × 5 =
  36. 36.19 × 50 =
  37. 37.12 × 5 =
  38. 38.55 × 5 =
  39. 39.74 × 5 =
  40. 40.41 × 50 =

Answer key

  1. 2100
  2. 350
  3. 1050
  4. 3800
  5. 1850
  6. 2850
  7. 4200
  8. 80
  9. 270
  10. 425
  11. 2700
  12. 4450
  13. 215
  14. 110
  15. 2700
  16. 375
  17. 405
  18. 190
  19. 4600
  20. 190
  21. 900
  22. 170
  23. 1800
  24. 1750
  25. 430
  26. 140
  27. 800
  28. 1100
  29. 235
  30. 410
  31. 300
  32. 2000
  33. 1300
  34. 2400
  35. 440
  36. 950
  37. 60
  38. 275
  39. 370
  40. 2050

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