Finding a percentage of an amount: GCSE Maths Practice
Fractions and percentages as operators
Finding a percentage of an amount
24 self-marking GCSE practice questions on Finding a percentage of an amount, written specifically for AQA, Pearson, OCR across Foundation and Higher tier. Instant marking with full worked solutions on every question.
Sample Finding a percentage of an amount questions
A few of the 24 questions, from easier to harder. Choose your exam board and tier to practise them, with every answer marked.
Question 12 marksGrade 3
A 110 g serving of cereal contains: Carbohydrates 99.4 g, Proteins 9.5 g, Fats 1.1 g.
Emily says more than 90% of this serving is carbohydrates. Is she correct? Explain your reasoning.
Show the worked solution
What are the common mistakes in Finding a percentage of an amount?
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.
Rounds to the wrong number of decimal places/significant figures despite correct working
Moved the decimal point too many places when converting 20% to a decimal, giving an answer 10 times too small
Compares percentage correct not count wrong
Compared Amaya's 65% CORRECT directly against Kai's 6 WRONG count without converting Amaya's percentage into an actual NUMBER of questions wrong first, comparing incompatible quantities.
Converts between a percentage and a decimal incorrectly (e.g. wrong power of ten)
15% converts to the decimal 0.15, not 1.5 - Ben used the wrong power of ten when converting the percentage to a decimal
Quick answers about Finding a percentage of an amount
How many Finding a percentage of an amount practice questions are there?
There are 24 self-marking GCSE Maths questions on Finding a percentage of an amount, 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 Finding a percentage of an amount?
No. You can start practising Finding a percentage of an amount straight away without an account. A free account keeps your results across sessions, so you can see your progress on this topic over time.
Ben works out 15% of £200 by multiplying £200 by 1.5, and gets £300.
Is Ben correct? Show your working to check, and give the correct value if not.
Question 42 marksGrade 4
Mo played 30 games of chess. He won 18 of these games.
He then played 20 more games. He had then won 64% of all of his games (across all 50 games).
How many of the 20 extra games did he win?
Question 53 marksGrade 5-6
Jo buys a pair of walking boots for £63 in a sale.
She saved 101 of the original price of the boots.
Work out how much money Jo saved.
Question 64 marksGrade 7-8
It is true that a% of b is always equal to b% of a (for any positive numbers a and b).
Rosie says: "160% of 40 = 140% of 60, because a% of b=b% of a."
(a) Show calculations to check Rosie's claim, and state whether Rosie is correct.
(b) Give a reason for your answer.