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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 205 · 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. 1.43 × 5 =
  2. 2.63 × 5 =
  3. 3.40 × 50 =
  4. 4.36 × 50 =
  5. 5.14 × 5 =
  6. 6.27 × 50 =
  7. 7.17 × 50 =
  8. 8.34 × 5 =
  9. 9.18 × 5 =
  10. 10.94 × 50 =
  11. 11.24 × 50 =
  12. 12.62 × 50 =
  13. 13.18 × 5 =
  14. 14.24 × 5 =
  15. 15.54 × 5 =
  16. 16.61 × 50 =
  17. 17.82 × 50 =
  18. 18.18 × 50 =
  19. 19.62 × 50 =
  20. 20.84 × 50 =
  21. 21.98 × 5 =
  22. 22.90 × 5 =
  23. 23.75 × 50 =
  24. 24.16 × 5 =
  25. 25.34 × 5 =
  26. 26.76 × 50 =
  27. 27.23 × 5 =
  28. 28.79 × 5 =
  29. 29.61 × 5 =
  30. 30.12 × 5 =
  31. 31.39 × 50 =
  32. 32.44 × 5 =
  33. 33.62 × 50 =
  34. 34.76 × 50 =
  35. 35.79 × 50 =
  36. 36.96 × 50 =
  37. 37.39 × 50 =
  38. 38.59 × 5 =
  39. 39.35 × 5 =
  40. 40.32 × 5 =

Answer key

  1. 215
  2. 315
  3. 2000
  4. 1800
  5. 70
  6. 1350
  7. 850
  8. 170
  9. 90
  10. 4700
  11. 1200
  12. 3100
  13. 90
  14. 120
  15. 270
  16. 3050
  17. 4100
  18. 900
  19. 3100
  20. 4200
  21. 490
  22. 450
  23. 3750
  24. 80
  25. 170
  26. 3800
  27. 115
  28. 395
  29. 305
  30. 60
  31. 1950
  32. 220
  33. 3100
  34. 3800
  35. 3950
  36. 4800
  37. 1950
  38. 295
  39. 175
  40. 160

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