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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 305 · 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. 1.37 × 5 =
  2. 2.30 × 5 =
  3. 3.27 × 50 =
  4. 4.62 × 5 =
  5. 5.70 × 50 =
  6. 6.65 × 5 =
  7. 7.52 × 5 =
  8. 8.18 × 5 =
  9. 9.91 × 50 =
  10. 10.41 × 50 =
  11. 11.21 × 50 =
  12. 12.52 × 5 =
  13. 13.96 × 50 =
  14. 14.17 × 5 =
  15. 15.48 × 5 =
  16. 16.21 × 5 =
  17. 17.69 × 5 =
  18. 18.71 × 5 =
  19. 19.26 × 50 =
  20. 20.17 × 50 =
  21. 21.17 × 50 =
  22. 22.54 × 50 =
  23. 23.55 × 50 =
  24. 24.87 × 5 =
  25. 25.46 × 5 =
  26. 26.24 × 5 =
  27. 27.50 × 5 =
  28. 28.91 × 5 =
  29. 29.78 × 50 =
  30. 30.14 × 5 =
  31. 31.43 × 5 =
  32. 32.35 × 50 =
  33. 33.13 × 50 =
  34. 34.69 × 50 =
  35. 35.62 × 5 =
  36. 36.15 × 50 =
  37. 37.98 × 5 =
  38. 38.20 × 5 =
  39. 39.54 × 50 =
  40. 40.37 × 50 =

Answer key

  1. 185
  2. 150
  3. 1350
  4. 310
  5. 3500
  6. 325
  7. 260
  8. 90
  9. 4550
  10. 2050
  11. 1050
  12. 260
  13. 4800
  14. 85
  15. 240
  16. 105
  17. 345
  18. 355
  19. 1300
  20. 850
  21. 850
  22. 2700
  23. 2750
  24. 435
  25. 230
  26. 120
  27. 250
  28. 455
  29. 3900
  30. 70
  31. 215
  32. 1750
  33. 650
  34. 3450
  35. 310
  36. 750
  37. 490
  38. 100
  39. 2700
  40. 1850

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