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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 711 · 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. 1.44 × 50 =
  2. 2.43 × 5 =
  3. 3.94 × 50 =
  4. 4.65 × 5 =
  5. 5.59 × 50 =
  6. 6.54 × 5 =
  7. 7.25 × 50 =
  8. 8.83 × 50 =
  9. 9.36 × 50 =
  10. 10.26 × 5 =
  11. 11.72 × 5 =
  12. 12.90 × 50 =
  13. 13.72 × 50 =
  14. 14.17 × 5 =
  15. 15.40 × 5 =
  16. 16.28 × 50 =
  17. 17.36 × 50 =
  18. 18.61 × 5 =
  19. 19.24 × 5 =
  20. 20.84 × 5 =
  21. 21.24 × 50 =
  22. 22.70 × 5 =
  23. 23.17 × 5 =
  24. 24.47 × 50 =
  25. 25.56 × 5 =
  26. 26.87 × 50 =
  27. 27.77 × 50 =
  28. 28.80 × 5 =
  29. 29.32 × 50 =
  30. 30.23 × 5 =
  31. 31.32 × 50 =
  32. 32.35 × 5 =
  33. 33.31 × 5 =
  34. 34.67 × 5 =
  35. 35.76 × 50 =
  36. 36.57 × 5 =
  37. 37.47 × 50 =
  38. 38.65 × 5 =
  39. 39.40 × 50 =
  40. 40.46 × 5 =

Answer key

  1. 2200
  2. 215
  3. 4700
  4. 325
  5. 2950
  6. 270
  7. 1250
  8. 4150
  9. 1800
  10. 130
  11. 360
  12. 4500
  13. 3600
  14. 85
  15. 200
  16. 1400
  17. 1800
  18. 305
  19. 120
  20. 420
  21. 1200
  22. 350
  23. 85
  24. 2350
  25. 280
  26. 4350
  27. 3850
  28. 400
  29. 1600
  30. 115
  31. 1600
  32. 175
  33. 155
  34. 335
  35. 3800
  36. 285
  37. 2350
  38. 325
  39. 2000
  40. 230

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