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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 756 · 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. 1.21 × 5 =
  2. 2.84 × 5 =
  3. 3.48 × 50 =
  4. 4.30 × 50 =
  5. 5.84 × 50 =
  6. 6.85 × 5 =
  7. 7.42 × 50 =
  8. 8.83 × 5 =
  9. 9.17 × 5 =
  10. 10.25 × 5 =
  11. 11.93 × 50 =
  12. 12.80 × 5 =
  13. 13.61 × 5 =
  14. 14.26 × 5 =
  15. 15.84 × 50 =
  16. 16.20 × 50 =
  17. 17.39 × 5 =
  18. 18.22 × 50 =
  19. 19.97 × 50 =
  20. 20.32 × 50 =
  21. 21.19 × 5 =
  22. 22.34 × 50 =
  23. 23.92 × 50 =
  24. 24.78 × 50 =
  25. 25.29 × 50 =
  26. 26.39 × 50 =
  27. 27.31 × 50 =
  28. 28.56 × 50 =
  29. 29.91 × 5 =
  30. 30.69 × 5 =
  31. 31.23 × 50 =
  32. 32.40 × 5 =
  33. 33.85 × 5 =
  34. 34.69 × 5 =
  35. 35.40 × 5 =
  36. 36.61 × 5 =
  37. 37.32 × 50 =
  38. 38.24 × 50 =
  39. 39.63 × 50 =
  40. 40.39 × 50 =

Answer key

  1. 105
  2. 420
  3. 2400
  4. 1500
  5. 4200
  6. 425
  7. 2100
  8. 415
  9. 85
  10. 125
  11. 4650
  12. 400
  13. 305
  14. 130
  15. 4200
  16. 1000
  17. 195
  18. 1100
  19. 4850
  20. 1600
  21. 95
  22. 1700
  23. 4600
  24. 3900
  25. 1450
  26. 1950
  27. 1550
  28. 2800
  29. 455
  30. 345
  31. 1150
  32. 200
  33. 425
  34. 345
  35. 200
  36. 305
  37. 1600
  38. 1200
  39. 3150
  40. 1950

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