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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 403 · 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. 1.35 × 50 =
  2. 2.47 × 5 =
  3. 3.44 × 5 =
  4. 4.95 × 5 =
  5. 5.37 × 5 =
  6. 6.83 × 5 =
  7. 7.25 × 5 =
  8. 8.87 × 50 =
  9. 9.30 × 5 =
  10. 10.12 × 50 =
  11. 11.17 × 5 =
  12. 12.29 × 50 =
  13. 13.27 × 5 =
  14. 14.94 × 50 =
  15. 15.54 × 50 =
  16. 16.52 × 5 =
  17. 17.84 × 50 =
  18. 18.67 × 5 =
  19. 19.89 × 50 =
  20. 20.39 × 50 =
  21. 21.88 × 50 =
  22. 22.94 × 50 =
  23. 23.56 × 50 =
  24. 24.20 × 50 =
  25. 25.20 × 50 =
  26. 26.28 × 5 =
  27. 27.48 × 50 =
  28. 28.63 × 5 =
  29. 29.46 × 50 =
  30. 30.25 × 5 =
  31. 31.53 × 5 =
  32. 32.25 × 5 =
  33. 33.78 × 5 =
  34. 34.49 × 50 =
  35. 35.76 × 50 =
  36. 36.74 × 50 =
  37. 37.49 × 5 =
  38. 38.72 × 5 =
  39. 39.36 × 50 =
  40. 40.23 × 50 =

Answer key

  1. 1750
  2. 235
  3. 220
  4. 475
  5. 185
  6. 415
  7. 125
  8. 4350
  9. 150
  10. 600
  11. 85
  12. 1450
  13. 135
  14. 4700
  15. 2700
  16. 260
  17. 4200
  18. 335
  19. 4450
  20. 1950
  21. 4400
  22. 4700
  23. 2800
  24. 1000
  25. 1000
  26. 140
  27. 2400
  28. 315
  29. 2300
  30. 125
  31. 265
  32. 125
  33. 390
  34. 2450
  35. 3800
  36. 3700
  37. 245
  38. 360
  39. 1800
  40. 1150

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