Math Review

PEMDAS

100

Explain what the acronym stands for...

Parentheses, Exponents, Multiplication, Division, Addition, Subtraction

200

What is the first step in this problem?

3 x 9 + 7

3x9, Multiplication, or 3 times 9

300

What do you do first in a problem?

Multiply or divide?

Always go left to right/Whichever is first

400

Solve: (50 minus 10) divided by 4 times 7

(50-10)/4x7

=(40)/4 x 7

=(10) x 7

=70

500

Create your own mnemonic device for PEMDAS (It must make sense!)

Answers will vary...

Pandas Eat Muffins During Afternoon Snacks

Pizza Every Monday Donuts After School

Penguins Enjoy Many Delicious Arctic Snacks

Exponents

100

Explain what an exponent is.

The small raised number that tells how many times the base is multiplied by itself.

200

Explain what a base is.

The number being multiplied by itself.

300

Give an example of SQUARED.

Answers will vary:

5³

10²

400

Solve 5³

5*5*5=

125

500

Write 8⁴ in the expanded form.

8*8*8*8

Solve for X

100

What is "x"?

A variable

200

What is an expression?

A group of numbers, variables, and operations (NO EQUAL SIGN).

300

Give an example of a constant

A number with no variable.

Example: 8, 9, 2

400

Solve for x: x+7=12

 x+7=12

-7 = -7

x= 5

500

Solve for x: 7x+9=23.

7x+9=23

-9 = -9

7x = 14

divide by 7 both sides

x=2

Math Vocab

100

Coefficient

The number next to a variable

200

Isolate the variable

Get x alone on one side.

300

Cubed

A number raised to the power of 3.

400

Equation vs Expresion

Equation has =, Expression doesn't.

500

Standard form

The final value after simplifying.

Example: 5³ = 125

Show your work!

100

6³

216

200

20 divided by (5 times 2)

2

300

4³ x 5²⁼

1, 600

400

3(2x+4)=18

x=1

500

4(x+2)=3x+10

x=2