1. Order of Operations

2. Vocab you need to know… - numerical expression – a combination of numbers and operations 5 x 8 + 15 x 10 notice there is no equal sign!!

3. Order of operations -tells you which operation to perform first so that everyone finds the same value for an expression.

4. 1. Simplify the expressions inside parenthesis 2. Solve the exponents 3. Multiply and divide in order from left to right 4. Add and subtract in order from left to right

5. Memory Shortcuts… P lease E xcuse M y D ear A unt S ally or PEMDAS

6. 1. Simplify the expressions inside parenthesis 2. Solve the exponents 3. Multiply and divide in order from left to right 4. Add and subtract in order from left to right

7. For example 20/4 + 17 x (9 - 6)

8. Simplify the expressions inside parenthesis 20/4 + 17 x (9 - 6) 20/4 + 17 x 3

9. Solve the exponents 20/4 + 17 x (9 - 6) 20/4 + 17 x 3 There are no exponents in this problem.

10. Multiply and divide in order from left to right 20/4 + 17 x (9 - 6) 20/4 + 17 x 3 5 + 51

11. Add and subtract in order from left to right 20/4 + 17 x (9 - 6) 20/4 + 17 x 3 5 + 51 56