Ratios and Proportions
Expressions and Equations
Word Problems
Definitions
Unit Rate
100
Write a ratio in simplest form comparing the number of months that begin with the letter J to the total number of months in a year.
1/4 or 1:4
100
What is the value of n in this equation: 2n +1=21
n = 10
100
Seven less than what number is 1
8
100
A comparison of two different quantities when they are combined together.
Unit rate
100
Find the unit rate. 10 people in 2 vans.
5 people per van
200
A person jumps rope 14 times in 10 seconds. What is the unit rate in jumps per second?
1.4 jumps per second
200
Simplify the following expression: -4x-(-x)
-3x
200
Carl is paid $10 plus $8 an hour. He was paid $66. How many hours did he work?
7 hours
200
The constant value of the ratio of two proportional quantities x and y; usually written y = kx.
Constant of proportionality
200
Find the unit rate. 20 apples in 5 buckets.
4 apples per bucket
300
Simplify 16:4
4:1
300
What is the value of the expression: 2 + 3 x 3 + (-4)
7
300
Jessica took in 15 more than double the amount of calories as her sister. If her sister took in 800 calories, how many calories did Jessica take in?
1615
300
A mathematical phrase that can contain ordinary numbers, variables (like x or y) and operators (like add,subtract,multiply, and divide).
Expression
300
Find the unit rate. 40 dollars for 4 necklaces.
10 dollars per necklace
400
If there are 6 boys and 3 girls, what is the ratio of girls to boys in the lowest form?
1:2
400
Solve the equation for n. 5n=25
n = 5
400
Eight times what number is 16?
2
400
A statement that the values of two mathematical expressions are equal (indicated by the sign =)
Equation
400
Find the unit rate: 21 gallons of milk from 7 cows.
3 gallons of milk per cow
500
In 2001, 50.5% of US households has access to the Internet. What is the percent as a fraction in simplest form?
101/200
500
Solve for r. r/15=5
r = 75
500
Two less than four is equal to this number.
2
500
The _________ property lets you multiply a sum by multiplying each addend separately and then add the products.
Distributive
500
Find the unit rate: 75 baseballs for 5 players.
15 baseballs per player
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