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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 577 · 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. 1.24 × 50 =
  2. 2.51 × 5 =
  3. 3.45 × 5 =
  4. 4.92 × 50 =
  5. 5.57 × 5 =
  6. 6.50 × 50 =
  7. 7.36 × 50 =
  8. 8.85 × 50 =
  9. 9.52 × 50 =
  10. 10.45 × 50 =
  11. 11.62 × 5 =
  12. 12.20 × 5 =
  13. 13.25 × 5 =
  14. 14.55 × 5 =
  15. 15.28 × 50 =
  16. 16.74 × 5 =
  17. 17.53 × 5 =
  18. 18.77 × 50 =
  19. 19.65 × 5 =
  20. 20.98 × 50 =
  21. 21.59 × 50 =
  22. 22.37 × 50 =
  23. 23.61 × 5 =
  24. 24.55 × 50 =
  25. 25.39 × 50 =
  26. 26.42 × 5 =
  27. 27.97 × 5 =
  28. 28.33 × 5 =
  29. 29.50 × 5 =
  30. 30.28 × 5 =
  31. 31.78 × 50 =
  32. 32.17 × 5 =
  33. 33.32 × 50 =
  34. 34.92 × 5 =
  35. 35.55 × 50 =
  36. 36.31 × 5 =
  37. 37.77 × 50 =
  38. 38.95 × 50 =
  39. 39.93 × 5 =
  40. 40.77 × 50 =

Answer key

  1. 1200
  2. 255
  3. 225
  4. 4600
  5. 285
  6. 2500
  7. 1800
  8. 4250
  9. 2600
  10. 2250
  11. 310
  12. 100
  13. 125
  14. 275
  15. 1400
  16. 370
  17. 265
  18. 3850
  19. 325
  20. 4900
  21. 2950
  22. 1850
  23. 305
  24. 2750
  25. 1950
  26. 210
  27. 485
  28. 165
  29. 250
  30. 140
  31. 3900
  32. 85
  33. 1600
  34. 460
  35. 2750
  36. 155
  37. 3850
  38. 4750
  39. 465
  40. 3850

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