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Definitions
Muliplication/ Division
Addition/ Subtraction
Two Step
Distributive Property
100

What is a two step equation?

Equations that take two steps.

100
What does n equal? 5+(6-2)/3=n
n=3
100
What does x equal? x-4=7
x=11
100
What does y equal? 2y+5=9
y=2
100

What does n equal? 21/3=n

n=7

200
What is an equation?
A mathematical sentence that has an equal sign.
200
What does a equal? 7a-23=12
a=5
200
What does y equal? 2+ y/9
y=81
200
What does n equal? n/6 - 1 = 3
n=24
200

Am summer job as an assistant counselor pays $6.50 per hour. How much does the counselor get for working 8 hours?

They get $52.00 for working 8 hours.

300

What are inverse operations?

Operations that undo each other.

300
What does b equal? b/15+6=11
b=3
300
Sue was 30 years old when her daughter Amy was born. If s represents Sue's age, which expression describes Amy age? A) s+30 B) s/30 C) 30-s D) s-30
D) s-30
300
What does p equal? p/3+8=20
p=36
300

What does x equal? x/4=32

x=128

400

What is a solution?

A solution of an equation is the value of varibles that makes the equation true.

400
3x-15=24
x=13
400

When burned, 18 gallons of gasoline produce about 360 pounds of carbon dioxide. Solve the equation 18n=360 to find out how much carbon dioxide 1 gallon of gasoline produces.

20 pounds

400
You save 26 dollars each week to buy a camera that cost 260 dollars. You already saved 182 dollars. In how many weeks will you save 260 dollars? Let w represent the number of weeks. Solve 26w+182=260.
In 3 weeks
400

What does d equal? 5d-2.16 = 3.9

d = 51

500

What is an open sentence?

An equation with one or more variables is an open sentence.

500
x/27+8=17
x=3
500
Yon need to buy a pair of pants and 3 shirts. You have 90 dollars to spend. The pants cost 24 dollars. How much can you spend on each shirt?
22 dollars
500
You order a backpack for 34 dollars and pens for 2 dollars each. You spend 46 dollars. How many pens do you order? Solve 3s+24=90
22 dollars
500

Lexie earns $5 a hour baby sitting. She worked 4 hours and spent $8.75 of her earnings. Write an equation that could determine how much she had left m=money

m=4x5-8.75