PEMDAS (Order of Operations)

Word Stuff

100

Give the correct order of operations.

Parentheses, Exponents, Multiplication OR Division, Addition OR Subtraction

200

Why is it important to know PEMDAS as a mathematician?

So everyone can solve every problem the same (correct) way.

300

What is the rule when multiplication and division are on the same line?

Left to right

400

When do we use PEMDAS

When we have different operations to solve in one problem

500

The problem was 20 - 5 x 2 + 3. My answer was 33. What did I do wrong?

I went from left to right without using the correct order of operations.

Fix my Mistake

100

9 - 3 x 2=12

Correct answer is 3. Do x then -, not - then x.

200

5 + 5 x 10 = 100

5 + 5 x 10 = 55 not 100

300

(4 x 5) + (7 x 8) - 6 x 4= 280

(4 x 5) + (7 x 8) - 6 x 4= 52 not 280

400

4 + 5 + 7 - 3 x 2 = 26

You need to follow PEMDAS and do x first. Correct answer is 10.

500

(2 x 12) ÷ 6 - 2 = 6

(2 x 12 ) ÷ 6 - 2 = 2 not 6

Solve

100

3 + 4 x 5

23

200

7 + (2 x 4) - 1

14

300

56 ÷ [(4+4) + 6]

4

400

20 – (5+3) x 2 + 4

8

500

(5 x 4) – 6 ÷ 2 + 9

26

Solve

100

14 - [2 x 7]

0

200

[49 ÷ (3+4)] + 5

12

300

5 + [14 ÷ 2 × 5]

40

400

[(4-1) + (5+1)]

9

500

[(21 x 3)+4)] x 2

134

Potent Potables

100

What word tells us to multiply?

Product

200

What is a saying to help you remember PEMDAS?

Please Excuse My Dear Aunt Sally

300

What do brackets mean in a problem?

Do that first

400

What is another way to write multiplication in a problem? A way other than, 2 x 2.

2 * or 2(

500

What is the most important rule when working with order of operations?

Follow the correct steps, PEMDAS.