PEMDAS (Order of Operations)

Words

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 PEMDAS phrase we use to remember the correct Order of Operations?

Please Excuse My Dear Aunt Sally.

400

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.

Correct my Mistake

100

9 - 3 x 2=12

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

200

4 + 5 + 7 - 3 x 2 = 26

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

300

14 - 2 x 7

0

400

1 + 1 + 1 x 0 = 3

2

Solve

100

3 + 4 x 5

23

200

7 + (2 x 4) - 1

14

300

20 – (5+3) x 2 + 4

8

400

(5 x 4) – 6 ÷ 2 + 9

26

500

5 + 14 ÷ 2 × 5

40