# Multiplication and Money

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Information about the video
**Multiplication and Money**

### Contents

### What is Money Multiplication?

Zuri and Freddie want to visit the Bee’s Knees Adventure park, but the tickets are too expensive! They decide to have a bake sale to earn money for the tickets. However, Zuri and Freddie are having trouble keeping track of the money! Follow along as they learn more about how to multiply money and multi-digit multiplication. Below we will explore more about money and multiplying with decimal points.

#### How to do Multiplication with Money

How do you multiply with money? Many people find the total cost of something by ADDING up money. But, you can use multiplication to count money in a more efficient way. You can multiply the cost of one item by how many people buy it. When you multiply money with decimal points it can be helpful to take out the decimal points while multiplying as whole numbers and then put them back in at the end. When multiplying money with decimal points…

Start by setting up the equation.

Next, multiply as whole numbers.

After that, circle the digits to the right of the decimal point.

Then, count the digits to the right of the decimal point.

Finally, put the dollar sign on.

#### Multiplication Examples with Money

Zuri and Freddie are selling breakfast muffins to their neighbors. If one box costs $4.25 and five people buy a box of muffins, how much money will Zuri and Freddie have made?

Start by creating a multiplication equation, here it is four dollars and twenty-five cents times five.

Next, multiply as whole numbers. four hundred twenty five times five equals two thousand one hundred twenty-five.

Then, circle the digits to the right of the decimal point and put the decimal point back in.

Finally, put the dollar sign on to find the cost!

Zuri and Freddie will receive twenty-one dollars and twenty-five cents from selling their breakfast muffins.

#### Multiplication with Money – Summary

Remember with *multiplication of money* ...

Start by setting up the equation.

Next, multiply as whole numbers.

After that, circle the digits to the right of the decimal point.

Then, count the digits to the right of the decimal point.

Finally, put the dollar sign on.

#### Money Multiplication – Additional Practice

At the end of the video, there are exercises for continued practice of multiplying whole numbers by decimals and worksheets.

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Transcript
**Multiplication and Money**

"Oh no, these tickets are too expensive." : "I know! Let's have a bake sale!" Zuri and Freddie are raising money to go to the adventure park. To help them know how much money they have earned, we can use "Multiplication and Money". Many people find the total by ADDING up money. But, you can use multiplication to count money in a more efficient way. Zuri and Freddie are selling four kinds of treats. Their first treat, the brownie box, costs five dollars and fifty cents. If eight people bought a box of brownies, how much money will Zuri and Freddie get? We COULD add the boxes like in repeated addition. OR, we can use multiplication by using the price for ONE box.... and the NUMBER of people who buy the boxes. When multiplying money start by creating an equation. Each box costs five dollars and fifty cents, if there are eight boxes, how much will Zuri and Freddie earn? Next take out the decimal point, we'll put it back in later. Now we want to solve the equation "five hundred fifty times eight". Then, multiply as if it were a whole number. "Five hundred fifty TIMES eight" equals four thousand four hundred. Next, let's put the decimal back in. There are two digits to the right of the decimal point. So, the solution ALSO needs two digits to the right of the decimal point. That is where we put the decimal point! Our new number will be forty-four decimal point zero zero. Zuri and Freddie will earn forty-four dollars for their brownies. They are also selling cookies! If each box costs them six dollars and forty-five cents, and seven people buy boxes, how much money will they earn? Remember, start by creating a multiplication equation. We can write "six dollars and forty-five cents times seven". Next, take out the decimal point and multiply as if they were whole numbers. "Six hundrerd forty-five TIMES seven" equals four thousand five hundred fifteen. Then, we can count the number of digits to the right of the decimal point... And put the decimal point back in. Our number will change to forty-five decimal point fifteen. Zuri and Freddie will earn forty-five dollars and fifteen cents from selling cookies. However, Zuri and Freddie are also selling cupcakes! If each box costs four dollars and twenty-five cents, and five people bought boxes, how much money will they have earned? Start with the equation, how can you set it up? Multiply "four dollars and twenty-five cents times five". Next multiply as if they were whole numbers, what did you get when you multiplied? "Four hundred twenty-five TIMES five" equals two thousand one hundred twenty-five. Then count the digits and find the decimal point. Here the decimal point will go two digits in from the right. Now we can read it as money! Zuri and Freddie will get twenty-one dollars and twenty-five cents. Finally Zuri and Freddie have cake pops! Try this one on your own. Each box of cake pops costs three dollars and seventy-five cents, and four people buy a box of cake pops. How much will Zuri and Freddie earn? Pause the video while you work on this problem. Zuri and Freddie will receive fifteen dollars. Before we see if Zuri and Freddie made enough money, let's summarize. When multiplying with money (...) Remember to start by creating an equation. Next, take the decimal point out and multiply as if the numbers were whole numbers. Then count the digits (...) And put the decimal point back in. Finally, put the dollar sign! I wonder if Freddie and Zuri earned enough to go to the Bee's Knees Adventure park?