Order of Operations & Evaluating Expressions

Review: Order of Operations

Please- ParenthesesExcuse- ExponentsMy- MultiplicationDear- DivisionAunt- AdditionSally- Subtraction

Review: Order of Operations

Remember that Multiplication and Division are a pair…do in order from left to right.

Addition and Subtraction are also a pair….do in order from left to right.

Review: “Evaluate”• Evaluating an expression means to plug in!• For example:

2n + 4 for n = 32(3) + 410

Let’s Practice…Evaluate the following expressions.

1. 3r – 17 for r = 6 2. 10 – 6d for d = 4

3. 5g + 20 – (4g) for g = 5 4. (3 + p)2 – 2p for p = 7