Binary, denary and hexadecimal patterns represent numbers.
Convert the hexadecimal number 82 to 8-bit binary.
Mark scheme
Award one mark for each correct nibble in the correct order:
- 1000 (1)
- 0010 (1)
0 marks if the response is not 8-bit binary.
Example answers and how they were marked
Full marks2/2
1000 0010
Why: Each digit is 4 bits: 8 = 1000, 2 = 0010 (2).
Some marks1/2
1000 0011
Why: Converts 2 as if it were the next digit up. The first nibble is correct (1); the second is not.
No marks0/2
0010 1000
Why: The nibbles are in the wrong order. Neither nibble is correct.