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 numbers used in expressions and equations

Constant

400

Another word for the letters used in expressions and equations.

Variable

500

What type of math uses numbers and symbols to formulate expressions and equations?

Algebra

Simplify Expressions

100

Simplify:

3(x+2)

3x + 6

200

Simplify

-4 (m + 9)

-4m - 36

300

Simplify:

3x - 9x

-6x

400

Simplify:

10x + 7 - 4x + 15

6x + 22

500

Simplify:

9 + 7x - 11 - 12x

-5x - 2

Two Step Equations

100

Solve for x:

2x + 1 = 5

x=2

200

Solve for x:

x/3 - 4 = 11

x=5

300

Solve for x:

-2x - 5 = -11

x=3

400

Solve for x:

30 = 15 - 5x

x=-3

500

Solve for x:
-4 = 14x + 10 

x=-1

Distributive Property

100

Simplify:

5(x + 1)

5x + 5

200

Simplify:

2(-3x - 9)

-6x - 18

300

Simplify:

-3(4 + 5x)

-12 - 15x

400

Simplify:

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

3x - 2

500

Simplify:

(2x + 5) - (4x + 2)

-2x + 3

Mixed

100

Write 3.035 x 10^-5 in standard form

.00003035

200

simply the following expression using scientific notation ( 7.5 x 10 ³)(4 x 10 ⁰) / (2.5 x 10 ⁵ )

1.2 x 10 ^-1

300

evaluate: 5x-4y+2  when x= -3; y= -7

15

400

at 7 p.m. the temperature is 15 degrees C. It drops 3 degrees each hour until 1 a.m. The temperature at 1 a.m.  will be 

-3 degrees C

500

x+ -3 = -20 + -5 + 7

x = -18