5.4F Order of Operations

October 1, 2020

Multiple Choice

DO NOW

What is the value of the expression shown?

278– (133.07 + 48.259 + 33)

Do the numbers in the (PARENTHESES) first!! Don't forget to line up your decimals!!!

• 214.329

• 129.708

• 48.292

• 63.671

5.4F Order of Operations

Simplifying Numerical Expressions

Simplifying Numerical Expressions

A numerical expression is a number sentence that doesn't have an answer yet.

Simplifying means to solve the expression according to the Order of Operations.

Order of Operations (PEMDAS)

Strategy and Steps

• COPY THE PROBLEM DOWN!!!

• Count the Operation Symbols

• Write the order you will perform you operations

• Copy and Replace - you can only solve one operation at a time. Each time you solve something, copy the problem again and write your new number in place of your old operation. Repeat until all operations are gone.

1,674 ÷ [(6 x 3) x (15 ÷ 5)]

[(8 x 9) + (3 x 3)] - 4.50