### 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

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

### example

Paul received [latex]$50[/latex] for his birthday. He spent [latex]$31.64[/latex] on a video game. How much of Paulâ€™s birthday money was left?

Solution

What are you asked to find? | How much did Paul have left? |

Write a phrase. | [latex]$50[/latex] less [latex]$31.64[/latex] |

Translate. | [latex]50 - 31.64[/latex] |

Simplify. | [latex]18.36[/latex] |

Write a sentence. | Paul has [latex]$18.36[/latex] left. |

### try it

### example

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

### try it

### example

Four friends went out for dinner. They shared a large pizza and a pitcher of soda. The total cost of their dinner was [latex]$31.76[/latex]. 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 [latex]6[/latex] bananas that cost [latex]$0.22[/latex] each and [latex]4[/latex] oranges that cost [latex]$0.49[/latex] each. How much is the total cost of the fruit?