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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 345 · 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. 1.90 × 5 =
  2. 2.57 × 50 =
  3. 3.72 × 50 =
  4. 4.59 × 50 =
  5. 5.81 × 5 =
  6. 6.95 × 5 =
  7. 7.54 × 50 =
  8. 8.14 × 5 =
  9. 9.12 × 5 =
  10. 10.33 × 50 =
  11. 11.51 × 5 =
  12. 12.84 × 5 =
  13. 13.53 × 50 =
  14. 14.66 × 50 =
  15. 15.26 × 5 =
  16. 16.64 × 5 =
  17. 17.14 × 5 =
  18. 18.22 × 5 =
  19. 19.96 × 5 =
  20. 20.96 × 5 =
  21. 21.63 × 5 =
  22. 22.45 × 5 =
  23. 23.84 × 5 =
  24. 24.50 × 5 =
  25. 25.64 × 5 =
  26. 26.22 × 5 =
  27. 27.41 × 5 =
  28. 28.35 × 5 =
  29. 29.17 × 50 =
  30. 30.87 × 50 =
  31. 31.86 × 50 =
  32. 32.70 × 50 =
  33. 33.28 × 50 =
  34. 34.35 × 5 =
  35. 35.53 × 50 =
  36. 36.49 × 50 =
  37. 37.54 × 5 =
  38. 38.36 × 5 =
  39. 39.27 × 5 =
  40. 40.14 × 5 =

Answer key

  1. 450
  2. 2850
  3. 3600
  4. 2950
  5. 405
  6. 475
  7. 2700
  8. 70
  9. 60
  10. 1650
  11. 255
  12. 420
  13. 2650
  14. 3300
  15. 130
  16. 320
  17. 70
  18. 110
  19. 480
  20. 480
  21. 315
  22. 225
  23. 420
  24. 250
  25. 320
  26. 110
  27. 205
  28. 175
  29. 850
  30. 4350
  31. 4300
  32. 3500
  33. 1400
  34. 175
  35. 2650
  36. 2450
  37. 270
  38. 180
  39. 135
  40. 70

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