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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 553 · 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. 1.52 × 50 =
  2. 2.84 × 50 =
  3. 3.15 × 50 =
  4. 4.46 × 50 =
  5. 5.81 × 50 =
  6. 6.43 × 50 =
  7. 7.63 × 50 =
  8. 8.21 × 5 =
  9. 9.12 × 5 =
  10. 10.91 × 5 =
  11. 11.86 × 50 =
  12. 12.39 × 50 =
  13. 13.25 × 50 =
  14. 14.61 × 5 =
  15. 15.43 × 50 =
  16. 16.68 × 50 =
  17. 17.45 × 50 =
  18. 18.34 × 5 =
  19. 19.68 × 50 =
  20. 20.66 × 5 =
  21. 21.16 × 5 =
  22. 22.72 × 5 =
  23. 23.36 × 50 =
  24. 24.85 × 5 =
  25. 25.85 × 50 =
  26. 26.55 × 5 =
  27. 27.60 × 5 =
  28. 28.59 × 50 =
  29. 29.25 × 5 =
  30. 30.30 × 5 =
  31. 31.13 × 50 =
  32. 32.20 × 50 =
  33. 33.35 × 50 =
  34. 34.72 × 50 =
  35. 35.96 × 50 =
  36. 36.19 × 5 =
  37. 37.27 × 5 =
  38. 38.82 × 5 =
  39. 39.65 × 5 =
  40. 40.12 × 50 =

Answer key

  1. 2600
  2. 4200
  3. 750
  4. 2300
  5. 4050
  6. 2150
  7. 3150
  8. 105
  9. 60
  10. 455
  11. 4300
  12. 1950
  13. 1250
  14. 305
  15. 2150
  16. 3400
  17. 2250
  18. 170
  19. 3400
  20. 330
  21. 80
  22. 360
  23. 1800
  24. 425
  25. 4250
  26. 275
  27. 300
  28. 2950
  29. 125
  30. 150
  31. 650
  32. 1000
  33. 1750
  34. 3600
  35. 4800
  36. 95
  37. 135
  38. 410
  39. 325
  40. 600

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