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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 103 · 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. 1.20 × 5 =
  2. 2.49 × 50 =
  3. 3.87 × 50 =
  4. 4.83 × 5 =
  5. 5.89 × 50 =
  6. 6.30 × 5 =
  7. 7.12 × 50 =
  8. 8.65 × 5 =
  9. 9.26 × 5 =
  10. 10.57 × 5 =
  11. 11.83 × 50 =
  12. 12.35 × 5 =
  13. 13.46 × 50 =
  14. 14.70 × 50 =
  15. 15.53 × 5 =
  16. 16.66 × 50 =
  17. 17.14 × 50 =
  18. 18.62 × 50 =
  19. 19.23 × 5 =
  20. 20.65 × 50 =
  21. 21.21 × 5 =
  22. 22.20 × 50 =
  23. 23.83 × 5 =
  24. 24.97 × 50 =
  25. 25.59 × 50 =
  26. 26.89 × 50 =
  27. 27.59 × 5 =
  28. 28.21 × 5 =
  29. 29.84 × 5 =
  30. 30.93 × 50 =
  31. 31.57 × 50 =
  32. 32.75 × 5 =
  33. 33.77 × 50 =
  34. 34.33 × 50 =
  35. 35.46 × 5 =
  36. 36.48 × 5 =
  37. 37.29 × 50 =
  38. 38.19 × 5 =
  39. 39.94 × 5 =
  40. 40.17 × 5 =

Answer key

  1. 100
  2. 2450
  3. 4350
  4. 415
  5. 4450
  6. 150
  7. 600
  8. 325
  9. 130
  10. 285
  11. 4150
  12. 175
  13. 2300
  14. 3500
  15. 265
  16. 3300
  17. 700
  18. 3100
  19. 115
  20. 3250
  21. 105
  22. 1000
  23. 415
  24. 4850
  25. 2950
  26. 4450
  27. 295
  28. 105
  29. 420
  30. 4650
  31. 2850
  32. 375
  33. 3850
  34. 1650
  35. 230
  36. 240
  37. 1450
  38. 95
  39. 470
  40. 85

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