Video Transcript
Recognizing and Counting Money:
Piastres
In this video, we’re going to learn
how to recognize the coins used in Egypt and say their value. We’re also going to learn how to
count a group of coins to find their value in piastres, and we’re going to learn how
to find different ways to make one pound.
These are the three Egyptian coins
we’re going to be learning about. Let’s look more closely at each
coin. Did you notice that the first coin
is the biggest? Do you know why? It’s because this coin is worth the
most. This is one pound. We know this because the value of
each coin is written on it. It says one pound in English and
the number one written in Arabic. We would write this as one LE. One Egyptian pound or one pound is
worth 100 piastres.
Let’s look more closely at the
second coin. This coin is worth 50 piastres. It’s smaller than a one-pound coin
because it’s worth less. 50 piastres is half of a pound. We know there are 100 piastres in
one pound, so half a pound is 50 piastres. We could use two 50-piastre coins
to make one pound. This is the smallest of our three
coins because it’s worth the least. This coin is worth 25 piastres. We can see it’s written as 25
PT. Piastres has been shortened to
PT. 25 piastres is a quarter of one
pound. There are four 25s in 100.
Now that we’ve learned about each
of the three coins and their value, let’s think about different ways to make one
pound. The easiest way to make one pound
is to use a one-pound coin. And we know that one pound is worth
100 piastres. Here’s another way to make a
pound. We know that each 50-piastre coin
is worth half a pound, and we know that two 50s make 100, so two 50-piastre coins
equal one pound. Here’s another way to make a
pound. 50 plus 25 plus 25 equals 100. And we know there are 100 piastres
in one pound. Two 25 piastres make 50
piastres. 50 plus 50 equals 100 piastres.
There’s one more way that we could
make a pound. Do you know what it is? Each 25-piastre coin is worth a
quarter of a pound. Four-quarters equals one whole or
one pound, so we could use four 25-piastre coins to make one pound. We found four different ways to
make one pound. We could use a one-pound coin. We know a 50-piastre coin is worth
half a pound, so we would need two to make one pound. Two 25-piastre coins make 50. 50 plus 50 makes 100 piastres. So we could use a 50- and two
25-piastre coins to make one pound. We know that a 25-piastre coin is
worth a quarter of a pound. Four-quarters makes one whole or
one pound, so we need four 25-piastre coins to make a pound.
Now that we’ve learned how to
recognize Egyptian coins and their value and we know different ways to make one
pound, let’s practice with some questions.
Complete.
In this question, we’re shown three
different coins. We have to add them together to
find the total number of piastres. We could use a number line to
help. And we’re counting in piastres. We know this one-pound coin is
worth 100 piastres. Our next coin is worth 50
piastres. So we need to start at 100 on our
number line and count forward 50 more. 100 plus 50 is 150 piastres. Now we just need to add our final
coin which is worth 25 piastres. 150 plus 25 equals 175
piastres. One pound plus 50 piastres plus 25
piastres equals 175 piastres.
Which of the following represents
50 piastres?
In this question, we’re shown four
different groups of coins. We have to find the total value of
each group of coins and select the group which represents 50 piastres. Let’s add together the value of the
two coins in the first group. We could use this part–whole model
to help. If the total amount of piastres
we’re trying to make is 50 and our first coin is worth 50 piastres, it can’t be this
group of coins because our second coin is worth 25 piastres. 50 plus 25 gives us more than
50. 50 and 25 is 75.
It can’t be this group of coins
either because 50 plus 25 plus 25 is greater than 50. We can’t use two 50-piastre coins
to make 50 piastres because double 50 is 100. So it must be our final group of
coins. There are two 25-piastre coins. 25 doubled or 25 plus 25 does equal
50. This is the group of coins which
represents 50 piastres. 25 plus 25 equals 50.
Which of the following represents
100 piastres? Is it 50 piastres plus 25 piastres
plus 25 piastres? One pound plus 50 piastres. Is it one pound plus 25 piastres
plus 25 piastres? Or is it 25 piastres plus 25
piastres plus 25 piastres?
In this question, we have to find
the group of coins which represents 100 piastres. We could use this bar model to
help. We know the whole amount or the
amount we’re looking to make is 100 piastres. We have a coin worth 50 piastres
and two 25s. We know that double 25 is 50 and
double 50 equals 100. 50 plus 25 plus 25 equals 100
piastres. These coins represent 100
piastres. If we have a one-pound coin and a
50-piastres coin, we’ve got more than 100 piastres because the one-pound coin is
worth 100 piastres. 100 plus 50 is 150.
This group of coins also represents
150 piastres. 100 plus 25 plus 25 equals 150. And the total of our three
25-piastre coins is 75. 25 plus 25 plus 25 equals 75. This is the group of coins which
represents 100 piastres.
Complete.
In this question, we have to add
together these three amounts of coins to find the total number of piastres. There are two one-pound coins. We know that one pound is worth 100
piastres, so two pound coins are worth 200 piastres. Next, we need to add our three
50-piastre coins. 50 plus 50 is 100. 100 plus 50 is 150. Now we need to add all three
25-piastre coins. 25 plus 25 is 50. 50 plus 25 is 75.
Let’s use a number line to help us
add 200, 150, and 75. 200 plus 100 takes us to 300, and
50 more takes us to 350. We’ve added our first two groups of
coins. Now what we need to do is add
75. Let’s partition our 75 into 50 and
25. 50 more than 350 is 400. Now we just need to add our 25. 400 plus 25 takes us to 425. If we add together two one-pound
coins plus three 50-piastre coins plus three 25-piastre coins, the total number of
piastres is 425.
What have we learned in this
video? We’ve learned how to recognize
Egyptian coins. We’ve learned the value of each
coin and how to use different coins to make one pound.
