Video Transcript
Counting Groups of the Same Coin:
UK Pounds
In this video, we’re going to learn
how to count in twos, fives, and 10s up to 100 to find the value of groups of the
same type of coin. Do you remember the different coins
that are used in the UK? Here they all are. Do you remember which one has the
most value? It’s this two-pound coin here, then
comes the one-pound coin, the 50-pence coin, and the 20-pence coin. But these are not the coins that
we’re really going to be thinking about in this video, so we can get rid of them
from the screen. This leaves us with four types of
coins, and these are the ones that we’re going to be counting.
Now, do you remember what each one
of these coins is worth? We’ve got the one-penny or
one-pence coin. The second coin is worth two
pence. Do you remember this small silver
coin is worth five pence? And then we have the 10-pence
coin. So all the coins that we’re going
to be using in this video are going to be worth one, two, five, or 10 pence. Now, at the moment, we’ve only got
one of each coin. But what happens if we have more
than one of the same coin? What have we got here? Well, we could say that we’ve got
five coins, one, two, three, four, five. So we’ve got five coins. But how much money do we have? What are those five coins
worth?
Well, the first thing that we can
say is that each of the coins is the same. And if we look really closely at
the top of each coin, we can see two words that are going to help us here, two
pence. We know by the color, the shape,
the design on the coin, and even those two words that these are two-pence coins. Each one has a value of two
pence. So to find out how much money we’ve
got altogether, we need to count in twos, one number for each coin, two, four, six,
eight, 10. The coins are worth 10 pence. So do you think that the five coins
that we’ve just counted are worth exactly the same as one 10-pence coin? What do you think? Yes, they are. They both have a value of 10
pence. And because the line of our coins
were all two-pence coins, it was good practice for counting in twos.
Now, let’s play a game. Here, we’ve got two strips of
paper, and each one is covering something because underneath each strip of paper are
some coins. Now, our game is this. You need to guess which group do
you think is worth least. Now, perhaps you think, I can’t
answer this. All I can see are two strips of
paper. I need more information. So to help you with your guess,
let’s give you some more information. Underneath the first strip of paper
is a group of five coins, and you may’ve already noticed the second strip is a
little bit shorter, isn’t it? That’s because the group of coins
that’s underneath this strip is smaller. This is only three coins.
Now, which group do you think is
worth least? Perhaps you’ve made your guess or,
perhaps like this girl, you feel like you still need to know more. Why do you think this girl needs to
know more information? We know that the first group has
five coins in it, but the second group only has three. Surely the second group is worth
least; there aren’t as many coins. Let’s pull away the pieces of paper
and see what’s in each group. Here are the five coins that are in
group one. Can you see how much each coin is
worth? These are all one-penny coins. So to find the value of this group,
we can count in ones. And counting in ones is just the
same as counting, isn’t it? One, two, three, four, five. We have five coins, and altogether
they’re worth five pence. Our first group is worth five
pence.
Now, as we say, we know that in the
second group, there are only three coins. So why does the girl in the picture
still think she needs to know more information? Let’s see what the second group
contains. Here are our three coins. But wait a moment. These aren’t one-penny coins. These are coins that have a
different value. Do you remember what each of these
coins is worth? These are five-pence coins. So if we’re going to count the
value of these coins, we’re going to need to count in fives this time, one for each
coin — five, 10, 15. This group of coins is worth 15
pence. Now we know that five pence is less
than 15 pence. The group that’s worth the least is
the first group. I wonder if that’s a surprise to
some of you.
Looks like the girl was right when
she said she needed to know more. If we have more coins, it doesn’t
always mean we’ve got more money. Sometimes it does, but sometimes it
doesn’t. It depends on what the coins
are. Our first group looked quite big to
start with, didn’t it? But because each coin was only
worth one penny, it was worth less. And although our second group look
quite small because each coin was worth five pence, the total amount was worth
more. In other words, we can’t just count
coins. We need to look at what they’re
worth. And that’s why this video is all
about counting in ones, twos, fives, and 10s.
Let’s try answering some questions
now where we have to find the value of different groups of coins.
Look at the following line of
10-pence coins. How many coins are there? How much do the coins make
altogether?
In the picture, we can see a line
of coins. Now, we’re told in the question
what each of these coins is worth, but can you tell by looking at the picture
too? Each of the coins is a circle
shape, and it’s silver. And as well as looking at the
design on the coin, we can also see some words that we can use as a clue too. Can you read these small words at
the top, 10 pence. Each coin is worth 10 pence. Perhaps you recognize them when you
saw them. It’s a good skill to have. Now we’ve got two questions to
answer about this line of coins. Firstly, how many coins are
there? Because there are so few coins,
perhaps you can see how many there are without counting each one. But maybe we’d better count just to
make sure, one, two, three, four. There are four coins in the line,
aren’t there?
Now, our next question is
interesting. We’re asked how much do the coins
make altogether. If somebody said, how much money
have you got, what would we say? Do you think we just say I’ve got
four coins or even I’ve got four 10-pence coins? We wouldn’t, would we? We’d say what the total amount
is. And because each coin is worth 10
pence, we’re going to need to count in 10s to find out how much we’ve got. Let’s skip count in 10s, one number
for each coin, 10, 20, 30, 40. These coins make a total of 40
pence. This is how much money we’d have if
we had this row of coins.
To begin with, we knew that we had
a line of 10-pence coins, and the first thing that we did was to count them. We found that there were four
coins. And because each coin is worth 10
pence, we could skip count in 10s four times to find out how much all of the coins
are worth. Altogether, the coins make 40
pence.
Look at the coins in the picture
and find the value. There is what pence in total.
In the picture, we’re shown some
coins, and can you see? They’re all the same type of
coin. This makes it a lot easier to count
how much they’re worth. And this is useful because this is
exactly what we’ve got to do with this question. We need to find the value of these
coins. What are they worth altogether? Or perhaps the very first thing we
should do is what our question tells us to do. Look at the coins. What are these coins worth? Do you recognize them? They’re silver colored. They’re a circle shape. And if we look really closely, we
might be able to make out two words that’re written across the center. Sometimes coins have their value
written as a number, but on these coins, they’re written in words. Can you see what’s written on
them? We can see the words five
pence.
Each coin has a value of five
pence, but that’s what one coin is worth, and we’ve got lots of coins here. So how can we find out what these
coins are worth altogether? We’re going to need to count in
fives, aren’t we, one lot of five for each of the coins we can see. Are you ready to skip count in
fives? Five, 10, 15, 20, 25, 30. Because these are all five-pence
coins, we could find how much they’re worth altogether by counting in fives. We ended on the number 30, and
that’s how we know there is 30 pence in total. The missing number is 30.
We have two groups of coins as
shown in the picture, two-pence coins and 10-pence coins. Which group has more coins? Which group has more money?
We’re told that we have two groups
of coins. Let’s spend a moment to look at
them. The first group is labeled
two-pence coins. Do you know why this is? Well, each of the coins in this
group is the same, and they’re all worth two pence. Perhaps you remember that by the
way that these coins look or by the way that it says at the top of each coin two
pence. Now, our second group is a little
bit shorter, isn’t it? There are less coins in this group,
and this group is labeled 10-pence coins. Each of the coins in this group is
worth 10 pence. And again, perhaps you knew this
already. They’re silver colored, they’re
circular, and if you look really closely, you’ll be able to make out the words 10
pence at the top of each coin.
So we’ve been given these two
groups of coins to look at. Let’s take a look at the questions
that we need to answer. But perhaps you notice when we very
first read these questions, they do sound quite similar. Which group has more coins? Which group has more money? That’s the same thing, isn’t
it? Let’s begin with the first
question, which group has more coins? Now, when we ask this, what we’re
talking about is how many bits of metal are there in this group. How many actual coins are
there? We’re not worried about what each
one is worth, what their value is. We’re just worried about how many
there are. And as we’ve said already, the line
of 10-pence coins looks a little bit shorter, doesn’t it, than the line of two-pence
coins. Perhaps, we’d better count each
group just to be safe.
In the group of two-pence coins, we
can see one, two, three, four, five, six coins altogether. And in the group of 10-pence coins,
there are one, two, three, four coins altogether. It’s just like we thought. The group that has more coins is
the group of two-pence coins, isn’t it? In the second question, we’re asked
which group has more money? You might think to yourself, well,
we’ve just seen which group has more coins, and that’s the group of two-pence
coins. So surely this group has more
money. More coins means more money,
doesn’t it? Well, it doesn’t because what this
question is asking us is which group is worth the most, and this depends on what
sort of coins we’re looking at. In the first group, all of the
coins are worth two pence each, so we can skip count in twos to find the total, two,
four, six, eight, 10, 12. The two-pence coins altogether are
worth 12 pence.
Now, if we stop and think about
this, we can probably answer the question now. We know that each of the coins in
the second group are worth 10 pence, and we have four coins in the second group,
four lots of 10 pence. All those two-pence coins in the
first group only added up to 12 pence. Do you think the second group is
going to add up to more than 12 pence? I think so, don’t you, especially
as each coin is worth 10 pence already. But there’s only one way to find
out, and that’s to skip count in 10s, 10, 20.
Well, we’re already more than 12,
aren’t way? So we know that this group has more
money. Let’s carry on counting from 20,
30, 40. Our 10-pence coins are worth 40
pence altogether. This question has taught us
something interesting about coins. Just because we have more coins
doesn’t always mean that we have more money. It depends on what our coins are
worth. The group that had more coins in
our question was the group of two-pence coins. But when we counted the value of
each group, we found that the group that had more money was the group of 10-pence
coins.
Now, earlier on in the video, we
played a quick game. So just before we finish, let’s
play another one. Here are five groups of coins, and
your job is to spot the odd one out. Now with odd one out questions,
sometimes it’s quite difficult because there could be lots of answers. For example, you might say this was
the odd one out because it’s the only one that isn’t a circle. Or you might choose a different
reason. You might say this one is the odd
one out because it’s only in a group of one, whereas all the others have lots of
coins in them, so we’ll give you a quick clue. The answer is got something to do
with how much each group is worth. Perhaps we’d better look at each
group and find out. Let’s start with this coin first,
being there’s only one of them. Do you remember what this silver
coin is worth? It’s not big enough to be a
50-pence piece, is it? It’s a 20-pence coin.
Now let’s think about this group
here. We recognize these, don’t we? These are five-pence coins. So to find the value of this group,
we’re going to need to skip count in fives, five, 10, 15, 20. This group is worth 20 pence
too. Let’s have a look at this large
group here. Each coin in this group is worth
two pence, isn’t it? Let’s count in twos to find out how
much the whole group is worth, two, four, six, eight, 10, 12, 14, 16, 18, 20. Think we’re learning something
about money here, aren’t we? It’s possible for people to have
the same amount of money, but made with different coins. So far, we’ve made 20 pence in
three different ways.
Think maybe the answer to this
question is going to be a group that doesn’t have a value of 20 pence, don’t
you? This group at the bottom is quite
quick to count, isn’t it, because we can see that it has two coins and each coin is
worth 10 pence, 10, 20. Another group of coins that’s worth
20 pence. It looks like this group of
one-penny coins might be our odd one out. And because each coin is worth one
penny, we need to count in ones, one, two, three, four, five, six, seven, eight,
nine, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, getting close to 20, 20. But we’ve got one more coin,
21. And so if we’re talking about the
value of each group, the odd one out is this group here. All of the other groups are worth
20 pence.
What did we learn in this
video? We’ve learned how to count in twos,
fives, and 10s to find the value of groups of the same type of coin.
