Simplifying Expressions Order of Operations.

Let’s try to solve this equation… 10 + 2 ÷ 2 • 3 = 18 2 13

So how do you figure it out? 3 1 10 + 2 ÷ 2 • 3 = 13 1. Find the terms! 2. Simplify Terms! 3. Simplify Some More! 4. Solve!

Please Excuse My Dear Aunt Sally aka: P.E.M.D.A.S. aka: Order of Operations 1. Parentheses ( ) [ ] 2. Exponents 52 86 3. Multiplication OR Division (whichever is first in line) X ÷ or ÷ x 4. Addition OR Subtraction (whichever is first in line) + - or - + Order of Operations what to do first.

So does the order in which you perform operations matter? WHY?

Practice 1 3 • 4 + 6 = Answer 18

Practice 2 6 + 9 ÷ 3 = Answer 9

Practice 3 10 + 5 - 40 ÷ 4 = Answer 5

Round 1 20 - 5 + 12 ÷ 6 = Answer 17

Round 2 20 + 10 • 3 - 2 = Answer 48

Round 3 15 - 10 ÷ 2 • 2 = Answer 5

Round 4 3 + 8 ÷ 2 - 3 • 2 = Answer 1

Round 5 1 + 24 ÷ 2 - 3 • 2 = Answer 7

Round 6 16 ÷ 4 - 3 + 5 • 2 = Answer 11

iPad Activity – Order of Operations