This document discusses order of operations in math and explains that multiplication and division must be performed before addition and subtraction to get the correct answer. It provides examples like 3 + 6 x 4, where following the order of operations (BEDMAS) gives the answer of 27 rather than 9 x 4 = 36. The document also lists several common mnemonics like PEMDAS, PLEASE EXCUSE MY DEAR AUNT SALLY, and BIG ELEPHANTS DESTROY MICE AND SNAILS that remind students of the proper order of operations.

1. Math 6: Whole Numbers
Order of Operations

2. Getting Started
 4 + 6 x 7 = 70
 4 + 6 x 7 = 46
 Which one is correct?

3. Explore
 Solve: 3 + 6 x 4
 If you add first you get 9 x 4 = 36
 If you multiply first you get 3 + 24 = 27
 The RULE is you MUST do multiplication before addition to
get the correct answer.
 Which one is the correct answer?

4. Copy

5. Order of Operations
Other ways to remember 
 BEDMAS
 Brackets, Exponents, Division, Multiplication, Addition, Subtraction
 Please Excuse My Dear Aunt Sally
 Parenthesis, Exponents, Multiply, Divide, Add, Subtract
 Big Elephants Destroy Mice And Snails
 Brackets, Exponents, Divide, Multiply, Add, Subtract
 ALWAYS FOLLOW THESE RULES
 Exceptions – divide and multiply – which ever comes first or add and
subtract which ever comes first

6. In class work
 Pg. 56 + 57 #1, 6, 11

7. Homework
 pg. 24 + 25