Lesson video

Hello, my name's Mrs. Cornwell and I'm going to be working with you today and we're going to be finding out all about money, okay? So I would imagine you already know quite a lot about money because we see it all around us every day, don't we? All different types of coins and notes.

So we're going to find out how we can use money in different ways.

We can use it to pay for items. We can add up how much money we've got.

And so the learning we do today is going to be really useful for us, isn't it? So I'm really looking forward to working with you.

I know you'll work really hard.

So let's get started.

So our lesson today is called "Find out how many two p coins are needed to make a given value." And it comes from the unit "Unitizing and coin recognition, value of a set of coins." So in our lesson today, we are going to find out how many two p coins are needed to make a given value, okay? You'll find some strategies to do that and that will be able to help you with your work with money in the future, won't it? It will be really useful to you.

So our keywords today are two-pence coins.

My turn, two-pence coins.

Your turn.

And two p.

My turn, two p.

Your turn.

And value.

My turn, value.

Your turn.

Twos.

My turn, twos.

Your turn.

Excellent.

Well done.

So in the first part of our lesson then, we are going to find the correct number of two p coins to buy an item.

So we'll be doing a little bit of shopping here.

In this lesson, you will meet Sofia and Jun.

Jun and Sofia are playing in their toy cafe and they collect one p coins.

Okay, so you can see some one p coins that they've collected.

Let's see how much money they have.

One penny, two pennies, three pennies, four pennies, five pennies, six pennies, seven pennies.

One p, two p, three p, four p, five p, six p, seven p! We have seven p because we know seven warm pennies, it has a total value of seven p, doesn't it? Now here are the items in their cafe.

Oh, they look delicious, don't they? They're making me feel hungry.

Okay, and they give each item in their cafe a price.

There they are.

Look.

Jacob wants to buy the ice cream.

How many one-pence coins will he need? Hmm.

So let's have a look.

The ice cream costs six p, doesn't it? Each coin has a value of one p because they're one p coins.

So I will need one p, two p, three p, four p, five p, six p! So that is one penny, two pennies, three pennies, four pennies, five pennies, six pennies.

So he needed six coins, didn't he, to make the six p with one-pence coins.

Sofia thinks she can pay for the ice cream with two-pence coins, hmm.

Interesting, isn't it? Do you think she can? So the ice cream costs six p.

We already know that, don't we? But this time, each coin has a value of two p.

That means we can count in twos.

Did you think that? I wonder if I will need the same amount of coins.

Do you think though we had six one pennies, do you think we'll need six two ps? Let's see.

Two.

Two pence, four pence, six pence.

Oh, so that is one two-pence coin.

Two two-pence coins.

Three two-pence coins.

So I will need three coins.

So she actually didn't need as many coins there, did she? And she's telling us, I needed fewer coins because each coin was worth more.

Jun says, he will need these two p coins to pay for the lolly.

Okay, we can see that the lolly costs, that's right, eight pence.

Is he right? Do you think that's the coins that you would give to pay for the lolly? So Sofia says each one-pence coin would have a value of eight p.

So eight two p coins cannot be worth the same amount, can they? If you need eight one p coins, you can't also need eight two p coins to pay the same amount.

Each coin has a value of two p.

So I will count them in twos until I reach eight p.

So Jun's remembered something important there about the value of the coin and how that affects the way you count them.

We see two p, but we think two pennies.

You can count them in twos.

Two p, four p, six p, eight p.

So actually, he didn't need all of those coins there.

He only needed four of them, didn't he? Jun collects some more two p coins.

He wants to buy the cake.

There it is.

Hmm.

Cherry cake.

How many coins will he use to pay for it? The cake costs 10 p.

Okay.

Each coin has a value of two p.

So I wonder how he will find out how many two p coins he needs.

He says, I will count in twos until I have enough money.

Two p, four p, six p, eight p, 10 p.

One two-pence coin.

Two two-pence coins.

Three two-pence coins.

Four two-pence coins.

Five two-pence coins.

So I will need five coins.

Excellent.

That was a good strategy, wasn't it? He used his skip counting to help him.

Sofia has 14 p.

She wants to buy the sandwich, okay? And what do you notice about the sandwich? That's right.

It costs 12 p, doesn't it? So the sandwich costs 12 p.

Each coin has a value of two p.

Okay, so she says she remembers that means I can count them in twos.

So let's see what she does.

Two p, four p, six p, eight p, 10 p, 12 p, 14 p.

Hmm.

Right, did you spot anything? What mistake has been made there? Sofia spotted her own mistake, hasn't she? I forgot to stop counting when I reached 12 p, she says.

So she didn't need all of her coins, did she? She just needed the coins that when she counted them reached 12 p.

So let's see how many that was.

When I reach 12 p, I must count the number of coins.

One two-pence coin.

Two two-pence coins.

Three two-pence coins.

Four two-pence coins.

Five two-pence coins.

Six two-pence coins.

So now she knows she's got the right amount.

I will need six coins.

So now it's time to check your understanding.

Sofia changes the price of the lolly.

How many two p coins now would you need to buy the lolly? Okay, so the options are, would you need ten two p coins? Would you need seven? Or would you need 14? Okay, so you can get the coins out to help you, can't you? Okay, and then have a think about that and pause the video while you solve it.

Okay, and let's see how you got on.

So did you get seven? Did you say it was seven two p coins? Let's see why that's the right answer.

So we can say two p, four p, six p, eight p, 10 p, 12 p, 14 p.

So now we've reached 14 p.

We stop counting.

And now we count the number of coins.

One two-pence coin.

Two two-pence coins.

Three two-pence coins.

Four two-pence coins.

Five two-pence coins.

Six two-pence coins.

Seven two-pence coins.

So we know that we are right.

So well done if you did that.

Sofia changes some of the items in their toy cafe and gives them different prices.

So there's an orange and she's given it a price of seven pence, hasn't she? Jun says they will not be able to pay for the orange using only two p coins.

Is he right, do you think? Hmm.

He says, when I count in twos, I will not say seven.

So that's why he thinks he will not be able to pay for it with two-pence coins.

Let's see.

Two p, four p, six p.

Hmm.

He puts another two-pence coin on.

It gets you to eight p.

So he can't pay for it exactly using two p coins.

I wonder what he would need to do.

I wonder what ideas you have about that.

Jun's idea is that he would need a one p coin, wouldn't he? So once he got to six p, he would need one p more to make seven p, wouldn't he? So he couldn't count it completely in two p coins.

So well done if you noticed that.

So now it's time for another check.

Here are some other items from their cafe.

Which ones could you buy using only two p coins? So we can see there's a pineapple that costs 14 p, a pear that costs 13 p, and some grapes that cost 20 p.

Okay, so pause the video now while you decide which ones could be paid for using only two p coins.

Okay, so let's see how you got on.

Did you spot the pineapple? Because that's 14 p.

And the bunch of grapes which cost 20 p.

When you count in twos, the ones digit follows the repeating pattern, 2, 4, 6, 8, and zero.

So you will not say 13.

So you wouldn't be able to buy the pear with two-pence coins only.

But if you look at the ones digit in those other examples, we can see they follow that pattern.

So we would be able to pay for those.

So well done.

Okay, so Sofia wants Jun to give her the correct amount of two p coins to pay for the banana.

And we can see that the banana costs 14 p.

Ooh, Jun says here, I think I can use my fingers to predict how many I will need.

I wonder if you thought of that.

I wonder how he will do it.

I will use one finger to represent each two p coin.

Hmm.

So then I will count to 14 in twos and see how many fingers I used.

So there's his hand and you can see he's using one finger to represent each two p coin.

So his first finger there, or his thumb actually, has a two on it for two, the first two p, doesn't it? So let's say 2, 4, 6, 8, 10.

Oh, he hasn't reached 14 yet, has he? So he has to keep going.

Needs more fingers.

12, 14.

I used seven fingers, so I must need seven coins.

And there we are.

We can see the seven coins that were represented by his fingers.

So let's check your understanding now.

How many two p coins would you need to buy the cup of tea? And we can see the cup of tea is 16 p, isn't it? Count on your fingers to find out.

Then use coins to check you were right.

So pause the video now while you try that.

Okay, let's see how you got on.

So there's the fingers of one hand, first of all.

And we can go 2, 4, 6, 8, 10.

Oh, but we haven't reached 16 yet, have we? So we need to keep going.

12, 14, 16.

Each finger represents one two p coin.

I used eight fingers, so I must need eight two p coins.

So well done if you did that.

Excellent work.

Jun wants to buy the ice cream and the lolly.

There they are.

Look.

Let's see how many two p coins he will need to pay for them both.

So the ice cream costs six p.

Each coin has a value of two p.

So we will need, we can see there, three coins because we had two pence, four pence, and six pence.

That's one two-pence coin.

Two two-pence coins.

Three two-pence coins.

Okay, now let's look at the lolly.

The lolly costs eight p.

Each coin has a value of two p.

So we will need two p, four p, six p, eight p.

So that's one two-pence coin, two two-pence coins, three two-pence coins, four two-pence coins.

We'll need four coins.

So you can see that Jun needed seven two p coins altogether to buy the cake and the lolly, didn't he? Okay.

So well done if you did that.

So here's our task for the first part of our lesson.

Skip count on your fingers to find out how many two p coins are needed to pay for each item.

Okay, so you've got some different items there, haven't you, with a price on each of them.

Then collect the two p coins and count them to see if you were right.

Draw the coins and count in twos to check that you have the right amount.

So when you know how many coins you need, you need to check that by counting them in twos, don't you? Okay, so pause the video now while you try that.

So let's see how you got on.

You may have done this.

So the cake cost eight p, didn't it? Chocolate cake there looks yummy.

Okay, so eight p, how many two-pence coins would you need? So you may have used your fingers.

Okay, you may have used your coins.

So when you found out, you would draw your coins, and we can see there were four two-pence coins needed.

And we can check them by counting two pence, four pence, six pence, eight pence.

And then we can see for the pen.

So we needed eight coins, didn't we? Two pence, four pence, six pence, eight pence, 10 pence, 12 pence, 14 pence, 16 pence, okay.

And then for 12 pence to buy the balloon, how many did you need? That was right.

You needed six two p coins.

Okay, and when you count them up, they add to 12 pence, don't they? And then we can see 20 pence.

Oh.

Oh, do you think you'll need more coins or fewer coins to make 20 pence? I wonder.

That's right, you need more, don't you? Because it's a higher value.

So you can see there you needed ten two p coins, and if you counted those in twos, they would reach 20 pence.

So well done if you did that.

Okay, so for the second part of our lesson, we are now solving problems using two p coins.

So here's Sofia.

She has these two p coins and she wants to buy the pineapple.

Can she afford it? So the pineapple costs 14 p and you can see the coins she's got there.

I wonder what the total value of her coins is.

So she says, the pineapple costs 14 pence, or p, so I will need 14 p or more.

Each coin has a value of two p, so I will count them in twos.

Two p, four p, six p, eight p, 10 p, 12 p, 14 ps.

Ah! Now I nearly counted onto 16 p, but Sofia remembered, I stop counting when I reach 14 p because that's what the price of the pineapple, isn't it? So she can afford the pineapple.

She had enough money.

I need seven of my coins to pay for it.

And there they are.

So now time to check your understanding again.

Jun has six two p coins.

How many of his coins will he need to pay for the cherry? And there's a cherry and we can see it costs eight p.

You've got some options there.

A, does he need 12 two p coins? B, does he need four two p coins? Or C, does he need six two p coins? Okay, pause the video while you work that out.

Okay, and let's see how you got on with that.

What did you say? Did you say four? Let's see.

So we can see that he has six two p coins there, can't we? Okay, you may have got the two p coins out to help you.

But when we count in twos, two p, four p, six p, eight p, we can see he only needed four of those coins to reach eight p and pay for that cherry.

So well done if you did that.

Jun has this money in his piggy bank.

You can see his coins there, can't you? The two-pence coins, that's his money, okay? He wants to buy the apple.

Does he have enough money? So the apple costs 12 pence.

He says, I will count to see if I have enough.

Two p, four p, six p.

Six p is less than 12 p.

I need to add some coins.

How many coins does he need to add? Hmm, I wonder how we could find that out.

Jun thinks of the number line.

I can use a number line to count on from six p, but I must remember to count on in twos because it's two-pence coins that we're trying to find, isn't it? So he starts at six p and he says, he will need another two p to get to eight p, another two p to get to 10 p, and then 12 p, and now he's got enough for the apple.

So how many extra two p coins did he need? That's right.

He needed three more two p coins.

You can see each step on the number line represents one of those coins.

So now time to check your understanding again.

Which child cannot afford to buy the banana? So each child has some two p coins.

The banana costs eight p.

So have a think about who cannot afford it? Who does not have enough? How many more two-pence coins do they need? So pause the video now while you think about that.

Okay, and then let's see what you've thought.

Did you spot it? Jun doesn't have enough, does he? He doesn't have enough to pay for something that's eight p.

So how many more coins does he need? So he's got two p, four p, six p.

Okay, so we need to count on from six p to find out how many extra coins he needs.

So he's at six p and he needs to reach eight p.

So six p.

Add another two p will get him to eight p.

So he needed one more two p coin, didn't he? Jun had three two p coins, which had a value of six p.

So he would need one more two p coin to reach eight p.

So well done if you did that.

Excellent work! Oh, so now here we've got a bag, and Jun says, I have put some two p coins in the bag.

Okay, we don't know how many.

But Sofia says, I have added three more two p coins.

So we do know what Sofia has added.

The total value of the coins in the bag, after Sofia's added, is 10 p.

How many coins did Jun put in at the start? Oh, so I wonder how we could work that out.

Okay, so we do have some information there to help us, don't we? Sofia says, I will draw a bar model to help me.

Okay, so 10 p is the whole amount in the bag.

We know that Jun's part and Sofia's part will have a total value of 10 p.

So that can go in the bar model as the whole amount, okay? We also know the part that Sofia added.

Okay, if we count in twos, we can see that Sofia added six p.

So six p is a part.

Okay, so now that can help us to find how many coins Jun must have put in the bag.

10 is made of six and four.

So there must have been four p in the bag to start with that Jun put in.

And there's that four pence.

Two two p coins have a value of four pence, so Jun must have put two two p coins in the bag.

So well done if you did that.

Okay, so here's the task for the second part of our lesson.

It's the first part of your task.

Draw the extra coins needed to pay for each item, okay? So each item has a price telling you how much it costs to buy it and there are already some two p coins there and you have to see how many more coins will be needed to pay for that item, okay? And as you work, look for any patterns that may help you, okay? Because that can help you to work more efficiently and make the maths more easy, can't it? So pause the video now while you try that.

And now here's the second part of your task.

Sofia adds some more coins to each bag.

Okay, so there's some bags there and we don't know how much is in each bag, but we can see the coins that Sofia has added.

And then she tells us the total value of the coins altogether.

Okay, so in the bag and the ones she added.

So you need to draw the coins that are hidden in the bag, and as before, are there any patterns that can help you? So look for those because they can help to make the number work much more easy when you spot those patterns and connections.

Okay, so pause the video now while you try that.

Okay, so let's see how we got on with this then.

So we can see that we needed six p to pay for the orange and we already had two two-pence coins there, which we know is two pence, four pence.

So we had four pence.

So if you count on from four, you will need one more two-pence coin to reach six pence, won't you? And then for the next one, you can see you've got four again because it's the same amount as in A.

So this time, we're trying to get to eight p, aren't we? We've already got four.

So that's right.

You'll need another four, won't you? Another two two-pence coins.

Then when you're trying to reach 10 p, you've already got four, so you will need three more coins.

Did you notice a pattern there that could have helped you? So each price increased by two p.

It went six p, eight p, 10 p.

And there were already two two-pence coins for each item.

So you just needed to add one extra two p each time, didn't you? So well done if you spotted that pattern to help you work a bit more quickly and efficiently.

Well done.

So let's look at the next examples now.

So we've got 12 p to buy the cherry, and we can see that we've already got five two-pence coins there.

So two p, four p, six p, eight p, 10 p.

So when we count on from 10 p to get to 12 p, we need one two-pence coin.

And then we can see the amount stayed the same there that we've got to start with.

We've got 10 p again, haven't we? And we need to reach 14 p.

So this time, you'll need another two two-pence coins, four pence, and then we've still got 10 p, but we need to reach 16 p, don't we? So how many two-pence coins did you need? That's right.

You needed another three two-pence coins to make six p.

And did you notice the pattern there to help you? That's right, each price increased by two p, and there were already five two p coins for each item.

So you just needed to add one extra two p each time again, didn't you? Just like on the first set of examples.

So well done.

You worked really hard with that.

And well done if you spotted that pattern.

Okay, so let's see how you got on with this.

So we can see that the total value is six p in A.

And we can see we already have two two-pence coins, which is four p.

So it must have been if the whole is six and four is a part, then the other part must have been two p.

That's right.

And then in B, we can see that if eight is the whole, the total value is eight p, and four is a part, the other part must be four.

And then we can see if the total value is 10 p, 10 is the whole and four is a part, the other part must be six.

And if when 12 is the whole and four is a part, the other part must be eight.

Did you spot any patterns that could help you with that? So each time, the total value increased by two p, and each time, two two p coins were added to each bag, weren't they? So there must have just been one extra two-pence coin needed each time.

So well done if you spotted that pattern because that would've helped you work much more quickly and efficiently, wouldn't it? Excellent.

Let's look at what we've learned in today's lesson.

Skip counting can be used to work out how many two-pence coins are needed to make a given value.

When you reach the value needed, you must stop counting.

The number of two-pence coins needed will be less than the value of the item.

And not all values can be made using only two-pence coins.

So well done.

We've done lots of useful learning today, haven't we? And hopefully, you should feel much more confident when you're working with money and you're wanting to pay for items. So well done with that.

Excellent work.

I've really enjoyed working with you today.