Lesson Video: Counting Money: Pounds Mathematics

In this video, we will learn how to count in 2s, 5s, 10s, and 20s within 100 to find the value of a group of notes and coins.

09:05

Video Transcript

Counting Money: Pounds

In this video, we’re going to learn how to count in twos, fives, 10s, and 20s within 100 to find the value of a group of notes and coins. Here are some of the coins and notes we’ll be using in this video. Do you know how much this coin is worth? This is a one-pound coin. Did you notice the symbol that we use to write one pound? This is a two-pound coin. Do you know what each of the three notes is worth? This is a five-pound note. And this is a 10-pound note. And this is a 20-pound note.

Counting one-pound coins is really easy. We just need to count in ones: one, two, three. When we count pound coins, we just need to count in ones. When we count two-pound coins, we need to count in twos: two, four, six, eight, 10, 12. To count five-pound notes, we need to count in fives: five, 10, 15. When we count 10-pound notes, we count in 10s: 10, 20, 30, 40. And when we’re counting 20-pound notes, we have to count by 20: 20, 40, 60.

When we’re counting a mixed group of notes and coins, we have to count forward by different amounts. Let’s count how much money we’ve got. The first note is a 20-pound note, so we need to count forward by 20. Our second note is a 10-pound note. So we’re counting forward 10 more starting from 20, which takes us to 30.

Our next note is a five-pound note, so we need to count forward five more. Five more than 30 is 35. Now, we just need to count the coins. The first coin is a two-pound coin, so we need to start from 35 and count forward two more: 35, 36, 37. And our last coin is a one-pound coin. One more than 37 is 38, so the total amount of money shown is 38 pounds. Let’s practice what we’ve learned about counting in pounds with some questions.

How much money is there in total?

We have to work out the total amount of money shown. We’re shown some notes and some coins. The notes are all the same. Do you know how much each note is worth? Each note is worth five pounds. To work out how much three five-pound notes are worth, we could start at zero and count forward in fives. And we would need to count forward in fives three times because there are three five-pound notes. Five, 10, 15.

Now, we just need to count our coins. Do you know what each coin is worth? It’s one pound, so we need to add our four one-pound coins to the 15 pounds we’ve already counted. We just need to count forward in ones. 16, 17, 18, 19. The total amount of money shown is 19 pounds.

Count on to find out how much money Michael has saved.

In this question, we have to count the total amount of money shown. This is how much money that Michael has saved. The question tells us which method to use. We have to count on to find the total amount of money. Michael has already started to count his money. Let’s help him finish counting. First, he counts his 20-pound notes. 20, 40, 60. And then he counts his 10-pound note, 70. Now we just need to count his two five-pound notes, 75, 80. Five more than 75 is 80.

Did you notice that Michael started counting with the notes that had the highest value, his 20-pound notes? Then he counted the 10-pound notes and then the five-pound notes. We counted on to find out how much money Michael has saved. He saved 80 pounds.

Which of the following is equal to 47 pounds?

We’re shown four different amounts of money. We have to count these groups of money to find out which is equal to 47 pounds. Let’s start by counting the first group. We’ve ordered the money from the notes with the greatest value, the 20-pound notes, down to the coin with the least value, which is the two-pound coin. Now we can count forward on the number line to find the total amount of money shown.

Let’s start by counting our two 20-pound notes. We need to count forward in 20s: 20, 40. Now we need to count forward 10 to add our 10-pound note. 10 more than 40 is 50. We need to count forward five from 50 to add our five-pound note. Start at 50, 51, 52, 53, 54, 55. Five more than 50 is 55. We already know that this group of coins is not equal to 47 pounds, but let’s finish counting. We just need to count forward two to add the two-pound coin. Two more than 55 is 57. So we know this is not the group we’re looking for. Let’s write the total amount just to remind us, 57 pounds.

Is this group of notes and coins worth 47 pounds? Let’s count to find the total. Again, we’ve got two 20-pound notes, so we need to count forward by 20 two times: 20, 40. Next, we need to count our three two-pound coins. So we need to start at 40 and count forward in twos three times. 42, 44, 46. Again, we’re very close to 47 pounds. We just got one more coin to add, and it’s a one-pound coin. One more than 46 is 47. This group of coins and notes is equal to 47 pounds. 20, 40, 42, 44, 46, 47.

This group is equal to 45 pounds. 10, 20, 30, 35, 40, 42, 44, 45. Let’s quickly count how much this group is worth. 20, 30, 40, 45, 46, 47, 48, 49. These notes and coins are worth 49 pounds. We picked the amount of notes and coins equal to 47 pounds.

What have we learned in this video? We have learned how to count in twos, fives, 10s, and 20s to find the value of a group of notes and coins.

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