Year 9 percentage change and simple interest test to download as PDF

This Year 9 percentage change and simple interest test lasts 45 minutes and is marked out of 20. It covers the whole chapter for pupils aged 13-14, and the full answers are on a separate page.

⏱️ Duration : 45 min
🎯 Total : 20 marks
❓ 5 questions

Mark/20

Question 1 – Percentage increase and decrease
Use a multiplier in each part.
1. Increase £240 by 15%. (2 marks)
2. Decrease £650 by 12%. (2 marks)
Question 2 – Percentage change
Work out each percentage change and say whether it is an increase or decrease.
1. A price changes from £36 to £45. (2 marks)
2. A price changes from £50 to £42. (2 marks)
Question 3 – Reverse percentages
Find the original value in each case.
1. After a 20% reduction a coat costs £48. (2 marks)
2. After a 5% increase the rent is £630 per month. (2 marks)
Question 4 – Simple interest
Zara invests £2 000 at 3.5% simple interest per year.
1. Find the interest after 4 years. (2 marks)
2. Find the total amount in the account after 4 years. (1 mark)
3. After how many years has she earned exactly £140 in interest? (1 mark)
Question 5 – Problem: the double sale
A jacket costs £120. In a sale it is reduced by 25%. On the last day a further 10% is taken off the sale price.
1. Find the final price. (2 marks)
2. Dev says this is the same as 35% off. Is he correct? Show your working. (2 marks)

How to use this Year 9 percentage change and simple interest test

First, revise with the percentage change and simple interest lesson and the worksheet. Then sit the test in one go, with a timer set to 45 minutes. After that, mark your work with the percentage change and simple interest test answers. If you lose marks on a question, redo it the next day without help.

Finally, you can download this Year 9 percentage change and simple interest test as a PDF and print it like a real exam paper. Moreover, all the pages of this chapter work together, so you can move between them at any time. For example, many pupils read the lesson on Monday, practise on Wednesday and test themselves on Friday.