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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 618 · 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. 1.40 × 5 =
  2. 2.25 × 5 =
  3. 3.23 × 50 =
  4. 4.81 × 50 =
  5. 5.34 × 50 =
  6. 6.94 × 5 =
  7. 7.15 × 5 =
  8. 8.61 × 5 =
  9. 9.45 × 50 =
  10. 10.24 × 5 =
  11. 11.53 × 5 =
  12. 12.68 × 50 =
  13. 13.82 × 50 =
  14. 14.60 × 5 =
  15. 15.17 × 50 =
  16. 16.40 × 50 =
  17. 17.64 × 50 =
  18. 18.14 × 50 =
  19. 19.90 × 50 =
  20. 20.63 × 5 =
  21. 21.40 × 50 =
  22. 22.85 × 50 =
  23. 23.50 × 5 =
  24. 24.76 × 50 =
  25. 25.12 × 5 =
  26. 26.74 × 50 =
  27. 27.64 × 5 =
  28. 28.44 × 50 =
  29. 29.12 × 50 =
  30. 30.36 × 50 =
  31. 31.57 × 50 =
  32. 32.66 × 5 =
  33. 33.87 × 50 =
  34. 34.72 × 5 =
  35. 35.59 × 50 =
  36. 36.81 × 5 =
  37. 37.96 × 50 =
  38. 38.33 × 50 =
  39. 39.18 × 50 =
  40. 40.21 × 50 =

Answer key

  1. 200
  2. 125
  3. 1150
  4. 4050
  5. 1700
  6. 470
  7. 75
  8. 305
  9. 2250
  10. 120
  11. 265
  12. 3400
  13. 4100
  14. 300
  15. 850
  16. 2000
  17. 3200
  18. 700
  19. 4500
  20. 315
  21. 2000
  22. 4250
  23. 250
  24. 3800
  25. 60
  26. 3700
  27. 320
  28. 2200
  29. 600
  30. 1800
  31. 2850
  32. 330
  33. 4350
  34. 360
  35. 2950
  36. 405
  37. 4800
  38. 1650
  39. 900
  40. 1050

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