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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 503 · 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. 1.94 × 5 =
  2. 2.27 × 50 =
  3. 3.84 × 5 =
  4. 4.24 × 50 =
  5. 5.40 × 5 =
  6. 6.74 × 5 =
  7. 7.29 × 5 =
  8. 8.91 × 50 =
  9. 9.60 × 5 =
  10. 10.37 × 50 =
  11. 11.20 × 5 =
  12. 12.29 × 5 =
  13. 13.88 × 5 =
  14. 14.56 × 5 =
  15. 15.12 × 50 =
  16. 16.64 × 50 =
  17. 17.62 × 50 =
  18. 18.26 × 5 =
  19. 19.80 × 50 =
  20. 20.43 × 50 =
  21. 21.32 × 50 =
  22. 22.13 × 5 =
  23. 23.51 × 50 =
  24. 24.12 × 50 =
  25. 25.16 × 50 =
  26. 26.18 × 5 =
  27. 27.66 × 50 =
  28. 28.18 × 50 =
  29. 29.46 × 50 =
  30. 30.34 × 50 =
  31. 31.13 × 5 =
  32. 32.37 × 50 =
  33. 33.81 × 5 =
  34. 34.90 × 5 =
  35. 35.45 × 5 =
  36. 36.16 × 50 =
  37. 37.97 × 50 =
  38. 38.24 × 5 =
  39. 39.88 × 5 =
  40. 40.97 × 5 =

Answer key

  1. 470
  2. 1350
  3. 420
  4. 1200
  5. 200
  6. 370
  7. 145
  8. 4550
  9. 300
  10. 1850
  11. 100
  12. 145
  13. 440
  14. 280
  15. 600
  16. 3200
  17. 3100
  18. 130
  19. 4000
  20. 2150
  21. 1600
  22. 65
  23. 2550
  24. 600
  25. 800
  26. 90
  27. 3300
  28. 900
  29. 2300
  30. 1700
  31. 65
  32. 1850
  33. 405
  34. 450
  35. 225
  36. 800
  37. 4850
  38. 120
  39. 440
  40. 485

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