Computer systems manipulate bit patterns.
Convert the hexadecimal number 8F to denary.
Mark scheme
Award one mark for:
- 143 (1)
Example answers and how they were marked
Full marks1/1
143
Why: 8 × 16 + 15 = 143 (1).
No marks0/1
248
Why: Takes the right-hand digit as the 16s, so the value is wrong.
No marks0/1
23
Why: Adds the two digits instead of multiplying the first by 16.