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

What are included in Grouping symbols?

Name at least 2.

Parentheses, fraction bar, brackets, and braces

400

Tell what 5 ³ really means. (Expanded form)

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. Multiply then subtract, not subtraction then multiplication.

200

5 x 5 + 1=11

5 x 5 = 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 GEMDAS and multiply 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) + 5 x 5

32

300

5 + 14 ÷ 2 × 5

40

400

[4-1]5 + 6(5+ 1)

51

500

21/3 x 3

21

Review

100

When adding and subtracting decimal numbers we do this. 

Stacking decimals/Aligning decimals/Line-up decimals.

200

We multiply fractions this way. 

Straight across. Top x Top, Bottom x Bottom

300

What is one of the strategies that we used to divide fractions?

Keep change flip, or get common denominator

400

The strategy to find a common denominator by multiplying the unlike denominators together. 

What is the Butterfly Method.

What is cross multiply. 

500

You always locate the invisible decimal here. 

Where is behind the whole number/behind the ones place.