## Using Decimals in Money Applications

### Learning Outcomes

• Use decimals in money applications

We often apply decimals in real life, and most of the applications involve money. The Strategy for Applications gives us a plan to follow to help find the answer. Take a moment to review that strategy now.

### Strategy for Applications

1. Identify what you are asked to find.
2. Write a phrase that gives the information to find it.
3. Translate the phrase to an expression.
4. Simplify the expression.
5. Answer the question with a complete sentence.

### example

Paul received $50$ for his birthday. He spent $31.64$ on a video game. How much of Paul’s birthday money was left?

Solution

 What are you asked to find? How much did Paul have left? Write a phrase. $50$ less $31.64$ Translate. $50 - 31.64$ Simplify. $18.36$ Write a sentence. Paul has $18.36$ left.

### example

Jessie put $8$ gallons of gas in her car. One gallon of gas costs $3.529$. How much does Jessie owe for the gas? (Round the answer to the nearest cent.)

### example

Four friends went out for dinner. They shared a large pizza and a pitcher of soda. The total cost of their dinner was $31.76$. If they divide the cost equally, how much should each friend pay?

### try it

Be careful to follow the order of operations in the next example. Remember to multiply before you add.

### example

Marla buys $6$ bananas that cost $0.22$ each and $4$ oranges that cost $0.49$ each. How much is the total cost of the fruit?

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