Expressions and Equations

Vocabulary

100

This type of math problem has no equal sign.

Expression

200

This type of math problem has an equal sign.

Equation

300

Another word for a number (without any letters beside it) in expressions and equations.

Constant

400

Another word for a number (with any letters beside it) in expressions and equations.

Coefficient 

500

The letters in an expression or equation.

Variable

One-Step Equations

100

4+b=7

b=3

200

-10+x=4

x=14

300

4x=20

x=5

400

x/2=5

x=10

500

0.3r=2.1

r=7

Two-Step Equations

100

6x-2x=24

x=6

200

2x+5=21

x=8

300

3b-4=11

b=5

400

2(3x+1)=14

x=2

500

2(x+2x)=36

x=6

Simplify the Expression

100

p+7p+5p

13p

200

6m+m+2+3m

10m+2

300

-6q+7-2+4q

-2q+5

400

7x+3y-4x+2y

3x+5y

500

Find the sum of the following expressions.

(3x+4)+(2x-1)

5x+3

Mixed

100

Is this an expression or equation?

2y+6x+12+4y-18y

Expression

200

What makes an equation different than an expression?

It has an equal sign.

300

Evaluate 3(x-10) for x = 17

21

400

Write an expression to show seven decreased by a number, x

7-x

500

Evaluate x(y-6) for x = 12 and y = 3

-36