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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 235 · 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. 1.13 × 5 =
  2. 2.24 × 5 =
  3. 3.32 × 50 =
  4. 4.33 × 50 =
  5. 5.84 × 50 =
  6. 6.56 × 5 =
  7. 7.37 × 5 =
  8. 8.26 × 50 =
  9. 9.29 × 5 =
  10. 10.58 × 5 =
  11. 11.21 × 50 =
  12. 12.42 × 5 =
  13. 13.26 × 50 =
  14. 14.84 × 5 =
  15. 15.52 × 50 =
  16. 16.34 × 50 =
  17. 17.83 × 5 =
  18. 18.51 × 5 =
  19. 19.32 × 5 =
  20. 20.68 × 50 =
  21. 21.20 × 50 =
  22. 22.22 × 5 =
  23. 23.16 × 50 =
  24. 24.24 × 50 =
  25. 25.23 × 5 =
  26. 26.30 × 50 =
  27. 27.80 × 50 =
  28. 28.98 × 5 =
  29. 29.43 × 50 =
  30. 30.68 × 50 =
  31. 31.49 × 5 =
  32. 32.17 × 5 =
  33. 33.79 × 5 =
  34. 34.19 × 5 =
  35. 35.64 × 50 =
  36. 36.71 × 50 =
  37. 37.98 × 5 =
  38. 38.36 × 5 =
  39. 39.71 × 5 =
  40. 40.16 × 50 =

Answer key

  1. 65
  2. 120
  3. 1600
  4. 1650
  5. 4200
  6. 280
  7. 185
  8. 1300
  9. 145
  10. 290
  11. 1050
  12. 210
  13. 1300
  14. 420
  15. 2600
  16. 1700
  17. 415
  18. 255
  19. 160
  20. 3400
  21. 1000
  22. 110
  23. 800
  24. 1200
  25. 115
  26. 1500
  27. 4000
  28. 490
  29. 2150
  30. 3400
  31. 245
  32. 85
  33. 395
  34. 95
  35. 3200
  36. 3550
  37. 490
  38. 180
  39. 355
  40. 800

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