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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 406 · 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. 1.50 × 50 =
  2. 2.92 × 50 =
  3. 3.33 × 50 =
  4. 4.25 × 5 =
  5. 5.76 × 50 =
  6. 6.45 × 5 =
  7. 7.81 × 5 =
  8. 8.32 × 50 =
  9. 9.68 × 50 =
  10. 10.35 × 50 =
  11. 11.12 × 50 =
  12. 12.44 × 5 =
  13. 13.85 × 50 =
  14. 14.94 × 50 =
  15. 15.24 × 50 =
  16. 16.41 × 5 =
  17. 17.61 × 5 =
  18. 18.71 × 5 =
  19. 19.19 × 50 =
  20. 20.33 × 5 =
  21. 21.81 × 50 =
  22. 22.62 × 5 =
  23. 23.83 × 5 =
  24. 24.91 × 5 =
  25. 25.17 × 50 =
  26. 26.74 × 50 =
  27. 27.70 × 5 =
  28. 28.28 × 50 =
  29. 29.67 × 5 =
  30. 30.97 × 50 =
  31. 31.33 × 5 =
  32. 32.70 × 5 =
  33. 33.12 × 5 =
  34. 34.34 × 50 =
  35. 35.96 × 5 =
  36. 36.78 × 5 =
  37. 37.62 × 5 =
  38. 38.14 × 5 =
  39. 39.59 × 50 =
  40. 40.29 × 5 =

Answer key

  1. 2500
  2. 4600
  3. 1650
  4. 125
  5. 3800
  6. 225
  7. 405
  8. 1600
  9. 3400
  10. 1750
  11. 600
  12. 220
  13. 4250
  14. 4700
  15. 1200
  16. 205
  17. 305
  18. 355
  19. 950
  20. 165
  21. 4050
  22. 310
  23. 415
  24. 455
  25. 850
  26. 3700
  27. 350
  28. 1400
  29. 335
  30. 4850
  31. 165
  32. 350
  33. 60
  34. 1700
  35. 480
  36. 390
  37. 310
  38. 70
  39. 2950
  40. 145

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