What is PEMDAS PEMDAS is the known as

What is PEMDAS? • PEMDAS is the known as the Order of Operations • PEMDAS is the acronym we use to decide what operation to solve first • PEMDAS or Please Excuse My Dear Aunt Sally

PEMDAS • What does PEMDAS stand for? • • • Parentheses Exponents Multiplication Division Addition Subtraction

What do I do first? • Follow PEMDAS! • If there is a parentheses, use PEMDAS to solve within the parentheses • X+2 x 4– 1 • (2+3) x 2 - 1

Step by step 2 5 – 36 2 3 What’s my first step? Exponents!!

Step by Step 25 – 36 9 What’s my second step? Division!!

Step by Step 25 – 4 Now, time for the last step…. Subtraction! =21

Step by step 20 – 5 + 3(2 x 6) 20 – 5 + 3(12) 20 – 5 + 36 20 – 5 + 3(12) 51

[4 – 2(10 -4)] 3 What’s my first step?

Step by step [4 – 2(10 -4)] x 3 [4 – 2(6)] x 3 [4 – 12] x 3 -8 x 3 -24

Who’s correct? 1– 5+4 x 2 - = -5 =5 2 3 =3

Who’s correct? 4 2 – = -3 2 3(3 =4 -5) = -4

5. 7 x 3 + 5 - |14 – 18| + 2 x 2 4

Who’s right?

Who’s right?

Who’s right?

Now you try! • Independent practice means that you work silently by yourself. • Raise your hand if you need help or have a question.

Exit Ticket On a piece of note paper, write: • your name • today’s date Then, answer these questions: Simplify: 1. 7 + (6 × 52 + 3) 2. 4 × 4 - 3 × 3 - 16 ÷ 4 3. (12 ÷ 3 + 4) - (42 - 6 × 2) (Be careful when you copy down the problem onto your paper)