Money and change

Hello, and welcome to Myriora Maths! You buy a book for three pounds sixty-five, and pay with a five pound note. How much change should you get? Let's learn the shopkeeper's trick.

Here are our coins: one penny, two pence, five, ten, twenty and fifty pence, one pound and two pounds. And notes: five, ten and twenty pounds. A hundred pence make a pound.

Let's make seventy-five pence with the fewest coins. Start with the biggest coin that fits: fifty pence. Then twenty pence makes seventy. Then five pence: seventy-five! Just three coins.

Now the change. Shopkeepers count up from the price. Three pounds sixty-five, add five pence, makes three pounds seventy. Add thirty pence makes four pounds. Add one pound makes five pounds. So the change is one pound thirty-five.

Check it: three pounds sixty-five, add one pound thirty-five, makes five pounds exactly.

Let's try one together. Something costs one pound forty, and you pay with two pounds. How much change? Say it out loud!

Count up: one pound forty, add sixty pence, makes two pounds. The change is sixty pence!

Here's a question that catches lots of people. Five pounds take away three pounds sixty-five. Some people take the smaller digit from the bigger one in each column, and get two pounds sixty-five. But you can't take six from nought like that! Count up instead: the change is one pound thirty-five.

Your turn! You buy something for six pounds thirty, and pay with a ten pound note. How much change? Pick the right card. You've got twenty seconds, or pause the video. Go!

Time's up! Six pounds thirty, add seventy pence, makes seven pounds. Add three pounds makes ten. So the change is three pounds seventy!

Quick review. A hundred pence make a pound. Make amounts with the biggest coins first. To find change, count up from the price to the money paid. Then check that it adds up. See you next time!