GCSE Maths

GCSE Maths Binary Numbers Exam Questions

Free GCSE Maths exam questions on Binary Numbers, with full model answers. Covers converting between binary and denary.

Binary Numbers exam questions

1 question pack of real past exam questions with its mark scheme. Answer every question without notes, then mark your answers line by line against the mark scheme.

About GCSE Maths Binary Numbers

Binary Numbers is a Grade 3+ GCSE Maths topic, so it mostly comes up on Foundation tier papers. These questions suit CCEA GCSE. Work through the pack without notes, then mark every answer against the model answers and redo any you got wrong a few days later.

What you need to know

  • Place values 1, 2, 4, 8, 16 and so on.
  • Binary to denary Add place values where there is a 1.
  • Denary to binary Subtract the largest powers of 2.

Common mistakes in Binary Numbers

  • Reading the place values backwards.
  • Missing zeros.

Try two Binary Numbers exam-style questions

1. Convert 1011 to denary. (1 mark)

Show the mark scheme answer

11

2. Convert 13 to binary. (1 mark)

Show the mark scheme answer

1101

Binary Numbers FAQs

Which exam boards include Binary Numbers?

These questions suit CCEA GCSE.

What grade is Binary Numbers in GCSE Maths?

It is a Grade 3+ topic, so it mostly appears on Foundation tier papers.

How should I use these Binary Numbers questions?

Answer every question without notes, then check each answer against the model answers and redo the ones you got wrong.