GEMDAS (Order of Operations)

Word Stuff

100

Give the correct order of operations.

Grouping Symbols, Exponents, Multiplication OR Division, Addition OR Subtraction

200

Why is it important to know GEMDAS as a mathematician?

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

300

Which comes first adding, subtracting, multiplying or dividing?

Multiplication OR Division. You work from left to right. 

400

Tell what 5 ³ really means.

It means 5 x 5 x 5

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 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

GCF/LCM Review

100

What is the GCF of 18 and 24?

6

200

What is the LCM of 18 and 24?

72

300

What is the GCF of 24 and 36?

12

400

What is the LCM of 24 and 36?

72

500

What is the GCF and LCM of 6 and 8?

GCF= 2

LCM= 24