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Number Bases

7 lessons · 3 questions

What the exams ask here

  • convert base
  • count numbers with binary digits below N
  • (25)_x = (85)_10 -> x
  • 1777 has exactly 5 digits in base x -> least x
  • last three binary digits of N

Lessons

  1. Start hereThe idea and the methodFirst lesson of Number Bases
  2. 1.Decimal to base1 question + fresh variants
  3. 2.Base to decimal1 question
  4. 3.Binary digit numbersNotes only
  5. 4.Unknown base equation1 question + fresh variants
  6. 5.Digit count in baseNotes only
  7. 6.Last digits in baseNotes only