Compare and order amounts of money - Maths - Learning with 91�ȱ� Bitesize

How to compare money

In this lesson we will use our knowledge of place value to order and compare amounts of money.

For some questions you may need to convert between pounds and pence.

£1 = 100p. That means that when we convert from pounds to pence we x by 100 and when we convert from pence to pounds we ÷ by 100.

Example 1

Is 428p greater than, less than or the same as £4.82?

To compare the two amounts we need to convert both to the same unit of measure.

In this example, we are going to convert the pounds into pence.

To go from pounds to pence we multiply by 100 so the calculation is 4.82 x 100.

This place value chart can help us work out the answer.

When we multiply by 100, each of the digits moves 2 places to the left so we can see that 4.82 x 100 = 482.

Two place charts, one showing 4.82 and one showing 482.

Now we have converted from pounds to pence the next step is to use our knowledge of place value to compare the two numbers.

When we compare we start with the column furthest to the left.

Both numbers have 4 hundreds so we move along to the tens.
428p has 2 tens and 482p has 8 tens.

8 tens are bigger than 2 tens so 482 is the bigger number.

428p and 482p represented on a place value chart.

This means the completed statement is 428p < £4.82.

Example 2

In this slideshow we will compare 3 amounts of money and place the amounts in ascending order.

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Image caption,
In order to compare the three amounts we will first convert the pence to pounds.
Image caption,
First we are going to convert 5215 into pounds by dividing by 100. We divide by 100 because £1 = 100p.
Image caption,
When we divide by 100, each digit moves 2 places to the right. Using a place value chart we can see 5215 ÷100 = 52.15 so 5215p in pounds is £52.15
Image caption,
The next step is to convert 5201p to pounds. Using the same method as before we can see that 5201p in pounds is £52.01.
Image caption,
The next step is to compare each of the amounts. We want to put them in ascending order so so we need to identify the smallest number first.
Image caption,
We start by comparing the number furthest to the left. In this case we will be looking at tens. Each number has 5 tens so we can move on to our ones. Each number has 2 ones so we can move onto tenths and hundredths. £52.01 has 0 tenths so this is the smallest number. Can you put the numbers in ascending order?
Image caption,
Going from the smallest value to the largest, the amounts in ascending order are £52.01, £52.10 and £52.15 or 5201p, £52.10 and 5215p.

Activities

Quiz

Ordering money

Have a go at ordering money in this quiz. It might help to convert some of the amounts on paper first before you try to place them in the correct order.

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How to compare money

Example 1

Example 2

Activities

Quiz

More on Money