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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 760 · 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. 1.19 × 50 =
  2. 2.45 × 5 =
  3. 3.32 × 5 =
  4. 4.12 × 5 =
  5. 5.83 × 5 =
  6. 6.55 × 5 =
  7. 7.25 × 5 =
  8. 8.25 × 50 =
  9. 9.55 × 50 =
  10. 10.32 × 50 =
  11. 11.30 × 50 =
  12. 12.55 × 5 =
  13. 13.69 × 5 =
  14. 14.18 × 5 =
  15. 15.84 × 50 =
  16. 16.89 × 50 =
  17. 17.89 × 5 =
  18. 18.95 × 50 =
  19. 19.45 × 5 =
  20. 20.18 × 50 =
  21. 21.20 × 5 =
  22. 22.17 × 5 =
  23. 23.45 × 5 =
  24. 24.80 × 5 =
  25. 25.28 × 50 =
  26. 26.86 × 5 =
  27. 27.88 × 5 =
  28. 28.70 × 5 =
  29. 29.49 × 50 =
  30. 30.52 × 50 =
  31. 31.54 × 5 =
  32. 32.51 × 5 =
  33. 33.42 × 50 =
  34. 34.15 × 5 =
  35. 35.16 × 5 =
  36. 36.69 × 5 =
  37. 37.31 × 50 =
  38. 38.16 × 5 =
  39. 39.56 × 5 =
  40. 40.15 × 50 =

Answer key

  1. 950
  2. 225
  3. 160
  4. 60
  5. 415
  6. 275
  7. 125
  8. 1250
  9. 2750
  10. 1600
  11. 1500
  12. 275
  13. 345
  14. 90
  15. 4200
  16. 4450
  17. 445
  18. 4750
  19. 225
  20. 900
  21. 100
  22. 85
  23. 225
  24. 400
  25. 1400
  26. 430
  27. 440
  28. 350
  29. 2450
  30. 2600
  31. 270
  32. 255
  33. 2100
  34. 75
  35. 80
  36. 345
  37. 1550
  38. 80
  39. 280
  40. 750

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