60 min read

Number Systems Practice Paper

Assignment-style conversion tables — binary, octal, hexadecimal and decimal — plus short written questions, with a separate answer sheet.

About This Paper

This paper has four conversion tables, like the ones in a Computer Systems assignment, and two short written questions. Copy each table onto paper and fill in the empty columns. Work on paper (or on your computer for practical tasks), just as you would in the real assignment. Show all your working. When you have finished, mark your work with the answer sheet .

Convert each hexadecimal number
Convert each hexadecimal number

E1. Give two reasons why programmers often write binary values in hexadecimal. Give one real example of where hexadecimal is used. E2. Show how you would check that your answer for 186 in Part D is correct.

About This Paper

This paper has four conversion tables, like the ones in a Computer Systems assignment, and two short written questions. Copy each table onto paper and fill in the empty columns. Work on paper (or on your computer for practical tasks), just as you would in the real assignment. Show all your working. When you have finished, mark your work with the answer sheet .

Convert each binary number

Convert each octal number

Convert each hexadecimal number

Convert each decimal number

Part E — Written Questions

E1. Give two reasons why programmers often write binary values in hexadecimal. Give one real example of where hexadecimal is used. E2. Show how you would check that your answer for 186 in Part D is correct.