Percentages are an important skill to master. You'll come across them in real life all the time - wage increases, inflation rates, interest rates etc. No wonder they form a key part of KS3 Maths. In this quiz we look at calculating increases and decreases in term of percentages.
You will often have to find a value when an amount increases or decreases by a percentage. There is more than one way of working it out but perhaps the easiest is to multiply by a decimal number. Say that something you want to buy for £200 has a 5% decrease in price. To work out the new price multiply £200 x 0.95 (95% of the previous price). If the price has increased by 5% then multiply £200 by 1.05 (105% of the previous price). There are other methods you can use so don't feel that you must follow my example!
Try this quiz about increases and decreases in percentages to get some practise - whatever the method you use!