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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 260 · 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. 1.28 × 50 =
  2. 2.94 × 5 =
  3. 3.84 × 50 =
  4. 4.89 × 50 =
  5. 5.96 × 50 =
  6. 6.57 × 50 =
  7. 7.59 × 5 =
  8. 8.40 × 50 =
  9. 9.62 × 50 =
  10. 10.27 × 5 =
  11. 11.30 × 50 =
  12. 12.17 × 5 =
  13. 13.36 × 5 =
  14. 14.97 × 50 =
  15. 15.43 × 5 =
  16. 16.36 × 5 =
  17. 17.67 × 50 =
  18. 18.21 × 5 =
  19. 19.77 × 5 =
  20. 20.50 × 5 =
  21. 21.96 × 50 =
  22. 22.37 × 50 =
  23. 23.14 × 50 =
  24. 24.38 × 5 =
  25. 25.94 × 5 =
  26. 26.41 × 5 =
  27. 27.92 × 50 =
  28. 28.15 × 5 =
  29. 29.97 × 5 =
  30. 30.26 × 5 =
  31. 31.76 × 5 =
  32. 32.53 × 50 =
  33. 33.81 × 50 =
  34. 34.72 × 50 =
  35. 35.81 × 5 =
  36. 36.50 × 5 =
  37. 37.30 × 5 =
  38. 38.14 × 50 =
  39. 39.58 × 50 =
  40. 40.35 × 50 =

Answer key

  1. 1400
  2. 470
  3. 4200
  4. 4450
  5. 4800
  6. 2850
  7. 295
  8. 2000
  9. 3100
  10. 135
  11. 1500
  12. 85
  13. 180
  14. 4850
  15. 215
  16. 180
  17. 3350
  18. 105
  19. 385
  20. 250
  21. 4800
  22. 1850
  23. 700
  24. 190
  25. 470
  26. 205
  27. 4600
  28. 75
  29. 485
  30. 130
  31. 380
  32. 2650
  33. 4050
  34. 3600
  35. 405
  36. 250
  37. 150
  38. 700
  39. 2900
  40. 1750

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