Best Buys

Best Buys

Calculating and comparing offers and prices

Finding the unit price

The best way to compare products sold in different sizes is to find the unit price:

cost

size

Multiple Choice

Click on picture to see question.

• 6 eggs

• 12 eggs

• 15 eggs

Multiple Choice

Click on the picture to see the question

• 42g

• 114g

• 390g

Multiple Choice

Click on picture to see the question

• 4 rolls

• 9 rolls

• 16 rolls

Best Buys- discounts

We might also need to find the best buy by comparing discounts

Discounts as fractions

Some discounts might be fractions such as half price or 1/3 off.

To find out how much money you save find the fraction of the amount as shown in the image.

To find the total cost you would need to subtract the discount from the total price:

40- 16= £24

Discounts as percentages

Some discounts might be as a % such as 25% off or 50% sale.

The image is a reminder of how you might find a % of an amount.

Don't forget to find the price after the discount you need to take it away from the original price.

Multiple Choice

A pair of trainers cost £48.00. There is a 10% sale. How much is the discount?

• £4.80

• £0.48

• £10.00

Multiple Choice

A TV costs £160. There is a 15% sale. How much does the TV cost in the sale?

• £24

• £136

• £145

Multiple Choice

A coat costs £60. There is 1/4 off. How much money do you save?

• £30

• £25

• £15

Multiple Choice

A sofa costs £150. There is a sale with 1/5 off. How much does the sofa cost in the sale?

• £120

• £145

• £100

Open Ended

Click on the picture of see the question. You need to write all of your working out in the answer box.