Order of Operations

Fix My Mistake

100

9 - 3 x 2 = 12

9 -3 x 2 = 3

200

10÷5 x 2 = 1

10÷5 x 2 = 4 

300

5 x 5 +1 = 30

5 x 5 + 1= 26

400

4 + 5 + 7 - 3 x 2 = 26

4 + 5 + 7 - 3 x 2 = 10

500

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

I did not multiply first. The answer should be 13.

Word Stuff

100

What is the sum of seventeen and six?

23

200

What is the first thing you do in the order of operations?

grouping symbol

300

What is this called?

4 x (3 + 5)

numerical expression

400

If I have addition and subtraction in my expression, I should move from ______ ___ _______.

left to right

500

Why is order of operations important?

So that everyone is solving the problem in the same way

Solve 1

100

3 + 6 x 4

27

200

25 ÷ 5 -2

3

300

12 - 8 ÷ 2 + 3

11

400

20 ÷ (8-3) + 16 

20

500

7 + 3 x (8 ÷ 4)

13

Solve 2

100

(14 + 6) x (12 -4) -9

151

200

(15 - 5) x 10  + 3

103

300

6 x 8 + ( 7 - 6 )

49

400

( 10 + 19 -5 ) x 2

48

500

2 x ( 9 x 9 + 2) - 8

158

Hodge Podge

100

Who lives in a pineapple under the sea?

Spongebob Squarepants

200

What is our state capital?

Harrisburg

300

What country invented fireworks?

China

400

Neil Armstrong and Buzz Aldrin were the first two men in the entire world to do what?

walk on the moon

500

How many letters are in the alphabet?

26