Algebra M&M

Vocabulary

100

the name for the unknown number that is represented with a letter

variable

200

the name for a number whose value will always remain the same (no variable)

constant

300

the number in front of a variable in a variable term

EX: 5x (what is the 5 called?)

co-efficient

400

Numbers, symbols and operations (such as + and ×) grouped together that represent the value of something

expression

500

A mathematical expression that shows the value of the expression using an equal sign

equation

Simplify Equations

100

2x + 5x - X 

6x

200

2x - 5x - (-x)

-2x

300

2x·5x

10x²

400

2xy - 8x + 2(x + y)

2xy - 6x + 2y

500

Simplify:  3x(x + 2y) - 6xy

3x²

Equations

100

3x + 9 = 30

x = 7

200

4(2x-5) = 60

x = 10

300

x/3 + 5 = 20

x = 45

400

3x + 10 = 2x

x = -10

500

3x - 6 = 5x - 8 - 3x

X = -2

Ratios and Proportions

100

What do you call a comparison of two numbers by division?

 A Ratio

200

Are 1/2, 16/36 equivalent ratios?

NO

300

If two ratios are equivalent they are __________ ratios.

Proportionate 

400

Find X  (-3/x) = (2/8)

-12

500

Find the value of “x” 

(x+1/4) = (3/4)

X = 2

Mental Math

100

Mental Math

98 + 99

197

200

Mental Math

3 x 2³

24

300

Mental Math

8 x 120

960

400

Mental Math 

What's the GCF of 24 and 80?

8

500

Mental Math:   Linda started doing her math homeowork at 12:25 p.m. she was done at 1:10 p.m. How long did it take Linda to finish her math homework?

45 Minutes