PEMDAS (Order of Operations)

Introduction

100

Give the correct order of operations.

Parentheses, Exponents, Multiplication OR Division, Addition OR Subtraction

200

Does multiplication always come before division?

No, it depends on what comes first left to right in the equation.

300

What comes first...division or subtraction?

Division

400

Tell what 5 ³ really means.

It means 5 x 5 x 5

500

The problem is 20 - 5 x 2 + 3. What comes first?

5 x 2

Fix my Mistake

100

9 - 3 x 2=12

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

200

5 ² + 1=11

5 ² = 25, not 10. Correct Answer is 26.

300

3² - 6 = 0

3 ² = 9, not 6. Correct answer is 3

400

4 + 5 + 7 - 3 x 2 = 26

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

500

10 ³ = 30

10 ³ = 10 x 10 x10, which is 1000, not 30.

Solve

100

3 + 4 x 5

23

200

7 + (2 x 4) - 1

14

300

56 ÷ (4+4) + 3²

16

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) + 5²

32

300

5 + 14 ÷ 2 × 5

40

400

(4-1)² + (5+ 1)²

45

500

1² + 2² x 3² - 4²

21

Mixed Review

100

Jaliah sold a piece of her artwork for $550. The supplies cost her $120. How much profit did she make on the art?

$430

200

Carmen has $3.78, Zach has $10, Nick has $6.01, Mr. B has -$12. Put the names in order from who has the least amount of money to who has the greatest amount of money.

Mr. B, Carmen, Nick, Zach

300

Bobby has 15 animals. Ten of the animals have 4 legs and five of the animals have 2 legs. How many animal legs are there total?

50 legs

400

Sonic runs 80 miles per hour. How many miles does Sonic run in 6 hours?

480 miles

500

David discusses politics 9 hours a day. How many hours does he discuss politics in a week?

63 hrs.