Unit 1 Algebra basics

Vocabulary

100

The number multiplied by a variable in a term.

What is Coefficient?

200

A letter or symbol used to represent an unknow number

What is a variable?

300

A number by itself, without a variable

What is a Constant?

400

Terms that have the same variables raised to the same powers

What are like terms?

500

A mathematical phrase containing numbers, variables, and operations but no equal sign.

What is an expression?

Expressions

100

Identify the coefficient of 7x

What is 7/

200

Simplify 3x + 5x

8x

300

Simplify 4x + 7 - 2x + 3

2x+10

400

Evaluate 3x+5 when x = 4

17

500

Simplify 2(3x+4) - 5x

x+8

Order of Operations

100

Evaluate 5 + 3(2)

11

200

evaluate 4 more than 18 divided by 3 

10

300

evaluate 2³+5(2)

18

400

Evaluate 3[4+2(5)]

42

500

2³+4(6-2)/2

16

Properties

100

a+b=b+a

Communicative property

200

5(x+3) = 5x+15

Distributive property

300

7+0=7

Identity property of addition

400

(4+5)+7=4+(5+7)

Associative property of addition

500

if an operation always produces and element of the same set 

Closure

Equations

100

solve

x+5=12

x=7

200

solve 

x-8=15

x=23

300

4x=28

x=7

400

solve 2x +6 =18

x = 6

500

3(x - 4) + 2 = 17

x = 9