Binary, denary and hexadecimal patterns represent numbers.
Convert the hexadecimal number B7 to 8-bit binary.
Mark scheme
Award one mark for each correct nibble in the correct order:
- 1011 (1)
- 0111 (1)
0 marks if the response is not 8-bit binary.
Example answers and how they were marked
Full marks2/2
1011 0111
Why: Each digit is 4 bits: B = 1011, 7 = 0111 (2).
Some marks1/2
1011 1000
Why: Converts 7 as if it were the next digit up. The first nibble is correct (1); the second is not.
No marks0/2
0111 1011
Why: The nibbles are in the wrong order. Neither nibble is correct.