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 how many five pence 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're going to find how many five pence coins are needed to make a given value, and that will help you to be able to pay for items in shops.

So let's get started.

So our keywords today are five pence coins, my turn.

Five pence coins.

Your turn.

And 5 p.

My turn.

5 p.

Your turn.

And value.

My turn, value.

Your turn.

And fives.

My turn.

Fives.

Your turn.

Well done.

So the first part of our lesson is where we're going to look at finding the number of five pence coins to buy an item, and Sofia and Jun are going to be in our lesson with us today, helping us with that.

Jun and Sofia have been using 5 p coins when they play in their toy cafe.

Let's see how much money they have.

One five pence coin, two five pence coins, three five pence coins, four five pence coins, five five pence coins, six five pence coins, seven five pence coins.

"We have seven pence," says Jun.

"We have seven coins," says Sofia, "But each coin has a value of 5 p." 5 p, 10 p, 15 p, 20 p, 25p, 30 p, 35 p.

We know when we see five pence we think five pennies don't we? So we have to count them in fives.

We don't count the number of coins, we find the value of the coins.

We have 35 p.

They give each item in their cafe a new price.

Jun wants to buy the ice cream.

How many five pence coins will he need? So let's see.

So the ice cream costs 15 pence.

Each coin has a value of five pence.

So five pence, 10 pence, 15 pence.

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

So I will need three coins to buy the ice cream.

So Jun says he will need two of his 5 p coins here to pay for the lolly.

Is he right? 10 pence, 20 pence.

What mistake has been made? Sofia spots it.

Each 5 p coin has a value of 5 p, so you must count them in fives, not in tens.

I think Jun's realised.

"I see 5 p, but I think five pennies.

I will count them in fives until I reach 20 p." 5 p, 10 p, 15 p, 20 p.

"Now I will count to see how many coins I used." One five pence coin, two five pence coins, three five pence coins, four five pence coins.

"I only needed four of my five pence coins," he says.

Sofia has 40 p.

She wants to buy the sandwich.

The sandwich costs 30 p.

Each coin has a value of 5 p.

"That means I can count them in fives," says Sofia.

Do you think she'll need all of her coins? Let's see.

5 p, 10 p, 15 p, 20 p, 25 p, 30 p, 35 p, 40 p, she counts.

What mistake has been made? "I forgot to stop counting when I reached 30 p," she said.

She only needed some of her coins, didn't she? Let's see how many coins she needed.

"When I reach 30 p, I must count the number of coins." One five pence coin, two five pence coins, three five pence coins, four five pence coins, five five pence coins, six five pence coins.

So she needed six coins, didn't she? She didn't need all of her coins.

So now it's time to check your understanding again.

Sofia changes the price of the lolly.

How many five pence coins would you need to buy the lolly now? So we can see it costs 40 p.

So would she need four five pence coins? Eight five pence coins? Or five five pence coins? So use five pence coins to find out.

Pause the video now while you try that.

Okay, let's see how you got on.

Did you get eight? Let's check and see.

We can prove it, can't we? Five, 10, 15, 20, 25, 30, 35, 40.

So we can see that we needed eight five pence coins to make 40 pence, didn't we? And we can count the coins.

One five pence coin, two five pence coins, three five pence coins, four five pence coins, five five pence coins, six five pence coins, seven five pence coins, eight five pence coins.

So well done! So Sofia changes some of the items in their toy cafe, and gives them different prices.

Okay, so the price of the cake is changed to 36 pence, isn't it? Jun says he cannot only use his five pence coins to pay for the cake.

Let's see if he is right.

When I count in fives, the ones digit is either zero or five.

"I won't say 36." 5 p, 10 p, 15 p, 20 p, 25 p, 30 p, 35 p, and then if you put on another 5 p, you get to 40 p, don't you? So you can't make 36 with just five pence coins.

You would have to, what would you have to do? "I need to stop counting in fives at 35," says Jun, "then add one." So there we have to change that last coin to a one pence coin, don't we? So well done if you spotted that.

So now it's time to check your understanding again.

Here are some other items from their cafe.

Which ones could you buy using only 5 p coins? So pause the video now while you think about that.

And then let's see, what did you think? That's right.

So the pineapple costs 20 p, and you can buy that with five p coins, can't you? Were there any others? And the grapes cost 35 p.

So you can buy that with 5 p coins as well, can't you? When you count in fives, the one digits follows the pattern five or zero.

So you will not say 14.

The ones digit has to be five or zero.

So well done if you spotted that.

Sofia wants Jun to give her the correct amount of 5 p coins to pay for the banana, and it costs 35 p, doesn't it? Jun says, "I think I can use my fingers to predict how many I will need.

I will use one finger to represent each 5 p coin.

Then I will count to 35 in fives and see how many fingers I used." So there.

Five is one finger, 10, 15, 20, 25, and then he's not up to 35 yet, so he needs another hand, doesn't he? Some more fingers.

30, 35! "I used seven fingers, so I must need seven coins." 'Cause each finger is representing one coin, isn't it? And there they are.

So well done if you did that.

So now it's time to check your understanding of that.

How many 5 p coins would you need to buy the cup of tea? And the cup of tea costs 40 p.

Count on your fingers to find out, then use coins to check you were right.

So pause the video now while you try that.

And then let's see how you got on.

So there's your fingers, and we've put five up so far.

So we'll count five, 10, 15, 20, 25, and then we're not at 40 yet, so we need some more fingers.

30, 35, 40.

So we needed eight fingers, didn't we? Each finger represented one 5 p coin.

I used eight fingers, so I must need eight 5 p coins.

So well done if you did that.

Now Jun wants to buy the ice cream and the lolly.

Let's see how many 5 p coins he will need to pay for them both.

The ice cream costs 15 p.

Each coin has a value of 5 p.

So we need five, 10, 15.

Three coins there.

So, three coins! The lolly costs 20 p, each coin has a value of 5 p, so I will need five, 10, 15, 20.

So this time it's four coins, isn't it? So altogether, to pay for both the ice cream and the lolly, you need seven five pence coins, don't you? So well done if you did that.

Now it's time for the task for the first part of your lesson.

Skip count on your fingers to find out how many 5 p coins are needed to pay for each item there.

So each item has a price.

Use your fingers to see how many five pence coins would pay for that item.

Then collect the 5 p coins and count them to see if you were right.

Then draw the coins and count in fives to check you have the right amount.

Okay? So pause the video now while you try that.

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

You may have done this.

So there's 20 pence for the cake.

So that's five, 10, 15, 20.

So you would've need needed four five pence coins.

So you could draw four five pence coins there like that, couldn't you? To represent the four fingers that you counted.

Okay, then B is 40 pence.

So you would say five, 10, 15, 20, 25, 30, 35, 40.

So how many coins would you draw there then? That's right, it would be eight five pence coins, wouldn't it? Then C there, we can see is 25 pence.

So we go with five, 10, 15, 20, 25.

So that's five coins, isn't it? So you would need to draw five five pence coins.

And then D, we need to make 50 pence.

Do you think you'll need more or fewer coins to make 50 pence than you did for 25 or for 40? Let's see.

So let's count on our fingers.

Five, 10, 15, 20, 25, 30, 35, 40, 45, 50.

That's right, you needed more, didn't you? 'Cause 50 has a higher value than 40 or 25.

So you needed 10 coins there.

So well done if you did that.

Now for the second part of our lessons, we're going to solve problems using five pence coins.

Sofia has these 5 p coins.

She wants to buy the pineapple.

Can she afford it? It costs 35 pence, doesn't it? "The pineapple costs 35 pence, so I will need 35 pence or more," she says.

Each coin has a value of 5 p, so I will count in fives.

5 p, 10 p, 15 p, 20 p, 25 p, 30 p, 35 p.

"I stopped counting when I reached 35 p," she says.

"I can afford the pineapple.

I need seven of my coins to pay for it there, don't I?" So she didn't need them all.

So well done if you notice that.

Okay, so now it's time to check our understanding again, isn't it? Jun has six 5 p coins.

How many of his coins will he need to pay for the cherry? So will he need A, 12 5 p coins, B, four 5 p coins, or C, six 5 p coins? Okay, and there are his 5 p coins there.

Pause the video now while you think about that.

So let's have a look then.

What did you think? Did you think it was four? That's right.

And let's see why.

So five pence, 10 pence, 15 pence, 20 pence.

And when you get to 20 pence, you stop counting, don't you? And then you see how many coins you needed.

So Jun has this money in his piggy bank, and he wants to buy the apple, which is 30 pence, isn't it? Does he have enough money? So how will we find out? "Well, I will count to see if I have enough," says Jun.

5 p, 10 p, 15 p.

"15 p is less than 30 p.

I need to add some more coins," he says.

How many more coins does he need? I wonder how we'll find out.

"I can use a number line to count on from 15 p," says Jun, "But I must remember to count on in fives." So let's see how we do that.

So there's 15 p, that's the money he already has.

And then he's going to put on another five pence coin.

So that'll get me get him to 20 p.

So 15, 20, 25, 30.

So we needed another three five pence coins, didn't he? So well done if you noticed that.

It's time to check your understanding again.

Which child cannot afford to buy the banana? And we can see the banana costs 20 p, doesn't it? Each child has some five pence coins.

So pause the video now while you think about that.

What did you think? Did you spot it? That's right.

Jacob only has two five pence coins.

That's 5 p, 10 p.

So he doesn't have enough money to buy the banana.

How much more money does he need, do you think? So pause the video now while you think about that.

Perhaps you could draw a number line to help you.

Let's see, how much more did he need? How many more coins? So he had 10 pence, didn't he? 10 p.

And so we need to see how many more 5 p coins he needed.

So we could say if he added one 5 p coin, that would get him to 15 p, wouldn't it? And then another one would get him to 20 p.

So he needed two more five pence coins, didn't he? Jacob had two 5 p coins, which had a value of 10 p, so he will need two more 5 p coins to reach 20 p.

So well done if you did that.

Sofia counts up her 5 p coins, and they have a total value of 30 p.

There are some coins in the till, and four coins on the counter.

How many coins must be in the till? "I will draw a bar model to help me," she says.

"30 p is the total value of the coins.

It is the whole amount." So she puts that in the whole of the bar model.

Jun says, "I can see there are four 5 p coins on the counter, so that is 20 p.

So 20 is a part.

30 is the whole, and 20 is a part, so the other part must be, that's right, 10 p." So, there must be 10 p in the till.

So well done.

Here's the task for the second part of our lesson today.

Okay, so you can see that there are some items and each item has a price, and there are some five pence coins to pay for each item, but there aren't enough.

So you've got to draw the extra coins needed to pay for each item.

So look out for any patterns that could help you while you're working.

So pause the video now while you try that.

And then here's the second part of our task.

Sofia has some coins to go in the till.

She tells us the total amount that will be in the till once she has put them in.

Draw the coins in the till.

Okay, so she tells us the total value once she's added those coins.

Pause the video while you try that.

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

We can see the orange costs 15 pence, and you've already got 5 p, 10 p there.

So you needed one more five pence coin, didn't you? And then the pair was 20 p.

So you had 10 p, so you needed two more 5 p coins.

And then 25 pence for the banana, so you needed three more five pence coins.

Are you noticing a pattern here? We had two five pence coins in each case, didn't we? And the price increased by 5 p each time.

So each time we just needed to add one more five pence coin, didn't we? The price increased by five pence each time.

There are already two five pence coins there.

So we only needed one more five pence to be added in each case.

So well done if you spotted that.

Now let's look at the next set.

So we've got the cherry here was 30 p, and there were four five pence coins.

So that's five pence, 10 pence, 15 pence, 20 pence.

So you needed to add another two five pence coins to get to 30 pence, didn't you? And then we had 35 pence this time, and we had four five pence coins already there, didn't we? So that's right, you only had to add three five pence coins there.

And then we had the grapes that were 40 pence, and we already had the four five pence coins there.

So this time you needed to add four five pence coins, didn't you? So well done if you spotted the pattern there.

The price increased by five pence each time again, didn't it? 30 p, 35 p, and 40 p.

But there were already four five pence coins there for each item.

So every time you just had to add one more 5 p coin.

So well done if you spotted that pattern.

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

So we can see, for A, the whole amount, the total value is 15 p.

So if you did the bar model, that would be the whole amount, wouldn't it? And we can see that one part, the part on the counter, is 10 p.

So the other part must be 5 p.

So well done.

Then for B, the total value, the whole amount is 25 p.

One part is 10 p.

So the other part must be 15 p.

Three five pence coins.

And then we can see that in C, the whole amount, the total value is 30 p.

10 p is a part, so the other part is 20 p, isn't it? Four five pence coins.

And then for D, the total value is 40 p.

So one part is 10 p, the other part must be 30 p, which is six five pence coins.

So well done if you spotted that.

So let's think about what we've learned in today's lesson.

Skip counting can be used to work out how many 5 p coins are needed to make a given value.

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

The number of five pence coins needed will be less than the value of the item, and not all values can be made using only five pence coins.

So well done.

You've worked really hard in our lesson, and I really enjoyed it.