Test 3# Review (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

Give the correct order of operations.

Parenthesis, Multiplication/Division, Addition/Subtraction

200

What is the saying we use to remember the correct Order of Operations?

PMDAS

300

Which the correct order to solve this exercise?

4 x (3 + 5) ÷ 2

First, parentheses, then multiplication, and finally the division. 

400

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

left to right

500

Why is it important to know PMDAS as a mathematician?

So that everyone is solving the problem in the same way in a correct order.

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

Mixed Review

100

Which the expanded form for the following number?

25.863

20 + 5 + 0.8 + 0.06 + 0.003

200

Power of ten 

10³

1,000

300

Divide the following number:

48,000 ÷ 600

80

400

Estimate quotient 

237 ÷ 7

210 ÷ 7 = 30

500

Mrs. Ruiz has 5 dollars, 2 quarters, and 3 nickels.  Mrs. Benítez has the same amount of money.

How much money does they have in total?

$11.30