How many Function Machines practice questions are there?

There are 44 self-marking GCSE Maths questions on Function Machines, written for AQA, Pearson, OCR across Foundation and Higher tier. Each one is marked instantly and has a full worked solution.

Do I need an account to practise Function Machines?

No. You can start practising Function Machines straight away without an account. A free account keeps your results across sessions, so you can see your progress on this topic over time.

Functions and function notation

Function Machines

44 self-marking GCSE practice questions on Function Machines, written specifically for AQA, Pearson, OCR across Foundation and Higher tier. Instant marking with full worked solutions on every question.

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Sample Function Machines questions

A few of the 44 questions, from easier to harder. Choose your exam board and tier to practise them, with every answer marked.

Question 12 marksGrade 3-4
A function machine multiplies the input by 5, then subtracts 10. Input: $x = 1$ Work out the output.
Show the worked solution
Multiply the input by 5: $1 \times 5 = 5$ M1
Subtract 10:

What are the common mistakes in Function Machines?

When a pupil makes one of these on Revision Workshop, the marking engine names the mistake and explains it, instead of just marking the answer wrong.

Carries out the operations in the wrong order rather than following BIDMAS/the correct algebraic order
Added/subtracted 1 before multiplying by 5, instead of doing the multiply first
Applies machine forwards in part b
Ran the machine forwards on the target output in part (b) instead of reversing it - part (b) needs the INVERSE operations, applied in reverse order.
Carries out only the first operation of a multi-step calculation and stops
Multiplied the input by 2 but forgot to add 5 afterwards

Quick answers about Function Machines

How many Function Machines practice questions are there?: There are 44 self-marking GCSE Maths questions on Function Machines, written for AQA, Pearson, OCR across Foundation and Higher tier. Each one is marked instantly and has a full worked solution.
Do I need an account to practise Function Machines?: No. You can start practising Function Machines straight away without an account. A free account keeps your results across sessions, so you can see your progress on this topic over time.