Math Review

Simplifying Expressions

100

Simplify

13x-9-4x

9x-9

200

Simplify

3(4x-9)

12x-27

300

Simplify

10x+9-12x-13+x+5

-x+1

400

Simplify

(10/3x)+(17/3x)

9x

500

Simplify

6x(3x-2)-4(5x-3)

18x²-32x+12

Solving Equations

100

Solve for x:

3x = 12

x = 4

200

Solve for x:

6x = 2(x+20)

x = 10

300

Solve for x:

7x = 2(4x-10)

x = 20

400

Solve for x:

2x-6 = 6x-18

x = 3

500

Solve for x:

5x-4 = 2x+5

x = 3

True or False

100

The following equations are equivalent:

6x + 12 = 30

12x + 6 = 42

True --> x = 3

200

When setting up an equation with R(I)+C=O, the variable, "I", is representative of the initial value.

False --> I = Input

300

The "P" in PEMDAS stands for Parenthesis

True

400

PEMDAS is only used in problems involving Fractions and/or Decimal numbers

False

500

The Constant, "c", does not change in value.

True.

Math Vocab

100

This acronym is a good way to remember the order of operations.

What is PEMDAS (Please Excuse My Dear Aunt Sally)?

200

Two expressions separated by an equals sign

What is an equation?

300

Numbers and symbols in a group with no equals sign

What is an expression?

400

Equations that have exactly the same solutions.

What are equivalent equations?

500

While this term may primarily be known as a male name of Spanish origin that means "Brave Ruler", it is also a useful acronym for anybody struggling with how to set up an equation.

What is...        R*(I)+C =O?

R=Rate of Change        I=Input Value        C=Constant Value        O=Output Value