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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 804 · 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. 1.45 × 50 =
  2. 2.60 × 5 =
  3. 3.23 × 5 =
  4. 4.34 × 50 =
  5. 5.70 × 50 =
  6. 6.66 × 50 =
  7. 7.36 × 5 =
  8. 8.35 × 50 =
  9. 9.75 × 5 =
  10. 10.75 × 5 =
  11. 11.97 × 50 =
  12. 12.35 × 5 =
  13. 13.32 × 5 =
  14. 14.53 × 50 =
  15. 15.97 × 50 =
  16. 16.98 × 5 =
  17. 17.34 × 5 =
  18. 18.43 × 5 =
  19. 19.67 × 50 =
  20. 20.53 × 5 =
  21. 21.88 × 5 =
  22. 22.36 × 50 =
  23. 23.85 × 50 =
  24. 24.65 × 5 =
  25. 25.51 × 5 =
  26. 26.71 × 5 =
  27. 27.83 × 5 =
  28. 28.28 × 5 =
  29. 29.64 × 50 =
  30. 30.68 × 5 =
  31. 31.53 × 50 =
  32. 32.36 × 50 =
  33. 33.72 × 50 =
  34. 34.76 × 50 =
  35. 35.92 × 5 =
  36. 36.17 × 5 =
  37. 37.44 × 5 =
  38. 38.67 × 5 =
  39. 39.83 × 50 =
  40. 40.30 × 5 =

Answer key

  1. 2250
  2. 300
  3. 115
  4. 1700
  5. 3500
  6. 3300
  7. 180
  8. 1750
  9. 375
  10. 375
  11. 4850
  12. 175
  13. 160
  14. 2650
  15. 4850
  16. 490
  17. 170
  18. 215
  19. 3350
  20. 265
  21. 440
  22. 1800
  23. 4250
  24. 325
  25. 255
  26. 355
  27. 415
  28. 140
  29. 3200
  30. 340
  31. 2650
  32. 1800
  33. 3600
  34. 3800
  35. 460
  36. 85
  37. 220
  38. 335
  39. 4150
  40. 150

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