Multiplying Money

Harry was at the store. He buys 4 rainbow lollipops. Each lollipop costs $2. How much will he have to pay for 4 lollipops?

Since he's buying 4 lollipops of the same kind, their prices are the same.

Instead of adding them one at a time, it's easier to just **multiply ****to get the total.**

When we're buying more than 1 piece of the same item with the same price, we canmultiply its costto get the total amount that we have to pay.

One lollipop is $2.

We multiply that by 4.

$2 x 4=$8

✅ Harry will have to pay **$8 for 4 lollipops**. 😃

Now, Harry sees **chocolate bars **that sell for **$0.65 each**.

How much money does he need to buy **5 bars**?

👉 To figure that out, we multiply $0.65 by 5.

$0.65 x 5=?

We **use a decimal point **to separate dollars from cents.

The **dollar side **is on the left, and the **cents side **is on the right.

😃 Tip: When an amount does not include dollars, we **just write 0 on the dollar side.** Just like in our example.

Before you multiply, **count** the decimal places for all the factors.

😃 We see that there are 2 decimal places for $0.65 and none for 5.

So that's a total of **2 decimal places**.

👇 We remember that for later! 😎

Because first, we're going to **multiply without the decimal point**.

65 x 5=?

To make it easy to multiply, write the equation in **vertical form**.

👉 Now, we **put the decimal point back **into the product we got.

How many decimal places did we count earlier?

Yes! **2 **decimal places.

We count 2 places **backward from the last digit**.

We **write the decimal point **between 3 and 2.

✅ Harry needs **$3.25 **to buy 5 candy bars. 😃

It's Harry's mother's turn to go shopping. 😺

She needs some cookies.

**Each bag **of cookies sells for **$2.45**.

How much does she have to pay for **4 bags** of cookies?

$2.45x4 bags of cookies=?

We write an equation for that...

2.45 x 4=?

👆 **Count the decimal places **in 2.45...

How many are there?

Yes, there are **2 decimal places**.

Remember that for later! 😎

👉 Now, we **multiply without the decimal places **using **vertical form.**

👇 Then, we **put back the decimal point.**

How many decimal places did we count?

That's right! **2** decimal places.

We **count 2 places from the right, or the rightmost digit**.

How much does Harry's mother have to pay for 4 bags of cookies?

That's right!

✅ She has to pay **$9.80 **for all 4 bags!

Great work! 👏

Now, Harry's mother looks inside her wallet.

👉 She has **five ****$5 bills **in it.

How much money does she have in all?

You can add the bills one at a time, but it would be faster if you just **multiply**.

$5 x 5=$25

✅ The total amount of the bills is **$25**.

👉 Then, she noticed that she also has **8 ****quarters.**

How much do all the coins amount in total?

A quarter is 25 cents or 25c.

So we multiply 25c by 8...

25c x 8=200c=200 cents

200c =$2.00

✅ Harry's mother has **$2 **worth of quarters.

Now, Harry's mother looked inside her wallet again. This time, she found 5 nickels.

How much is their total?

A nickel is 5 cents or 5c.

So we multiply 5c by 5...

5c x 5=25c

✅ The total of the nickels is **25 cents**.

Let's add all her money together:

**$25 + $2 + 25c = ****?**

We can bring the dollars together.

$25 + $2 = $27

That would give us $27.

If we add $27 and 25c together, we'll get $27.25!

Remember, when looking at money amount, the amount on the **left**** **of a decimal point is for **dollar amounts**, and on the **right**** **side is for the **cents**.

Great job learning how to multiply money!

Now, you can move on to practice. 💪

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