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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 530 · 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. 1.27 × 50 =
  2. 2.46 × 5 =
  3. 3.29 × 5 =
  4. 4.82 × 5 =
  5. 5.69 × 50 =
  6. 6.89 × 5 =
  7. 7.37 × 5 =
  8. 8.62 × 50 =
  9. 9.25 × 5 =
  10. 10.63 × 50 =
  11. 11.52 × 5 =
  12. 12.71 × 5 =
  13. 13.93 × 5 =
  14. 14.38 × 5 =
  15. 15.71 × 50 =
  16. 16.60 × 50 =
  17. 17.23 × 5 =
  18. 18.50 × 50 =
  19. 19.14 × 5 =
  20. 20.48 × 50 =
  21. 21.54 × 50 =
  22. 22.71 × 5 =
  23. 23.61 × 50 =
  24. 24.16 × 50 =
  25. 25.28 × 50 =
  26. 26.12 × 50 =
  27. 27.48 × 5 =
  28. 28.57 × 5 =
  29. 29.69 × 5 =
  30. 30.67 × 5 =
  31. 31.83 × 5 =
  32. 32.86 × 50 =
  33. 33.80 × 5 =
  34. 34.70 × 50 =
  35. 35.36 × 5 =
  36. 36.43 × 50 =
  37. 37.86 × 5 =
  38. 38.32 × 50 =
  39. 39.57 × 5 =
  40. 40.94 × 5 =

Answer key

  1. 1350
  2. 230
  3. 145
  4. 410
  5. 3450
  6. 445
  7. 185
  8. 3100
  9. 125
  10. 3150
  11. 260
  12. 355
  13. 465
  14. 190
  15. 3550
  16. 3000
  17. 115
  18. 2500
  19. 70
  20. 2400
  21. 2700
  22. 355
  23. 3050
  24. 800
  25. 1400
  26. 600
  27. 240
  28. 285
  29. 345
  30. 335
  31. 415
  32. 4300
  33. 400
  34. 3500
  35. 180
  36. 2150
  37. 430
  38. 1600
  39. 285
  40. 470

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