Ratios and Rates
Proportional Relationships
Percents
Adding and Subtracting Rational Numbers
Random
100
Give a ratio that is equivalent to 15:35.
What is 3:7?
100
Suppose the relationship between x and y is proportional. When x is 3, y is 51. Identify the constant of proportionality of y to x.
What is 17
100
8 is 25% of _____ (Part = Percent x Whole)
What is 32.
100
6 + (-2) =
What is 4
100
Find the sales tax on an item that costs $50 and the rate of sales tax is 3%. Part = Percent x whole
What is $1.50
200
An airplane on autopilot took 7 hours to travel 4,928 kilometers. What is the unit rate for kilometers per hour?
What is 704
200
The equation below describes a proportional relationship between x and y. What is the constant of proportionality? y = 5/8x
What is 5/8
200
The soccer team has a total of 20 jerseys. There are 12 medium-sized jerseys. What percent of the jerseys are medium-sized jerseys? (Part = Percent x Whole)
What is 60%
200
-16 + (-11) =
What is -27
200
Cassie is running a marathon. She runs 15 kilometers in 72 minutes. What is her speed in kilometers per hour?
What is 11 1/4
300
A store sells 4 cans of soup for $7. How much would it cost you to buy 3 cans of soup?
What is $5.25
300
The equation P = 3s represents the perimeter P of an equilateral triangle with side length s. What is the perimeter of an equilateral triangle with side length 4 cm?
What is 12 cm.
300
A salesperson at a jewelry store earns 6% commission each week. Last week, Bobby sold $640 worth of jewelry. How much did he make in commission? (Commission = commission rate x sales amount)
What is $38.40
300
-2.3 - (-3.5) =
What is 1.2
300
If the original quantity is 10 and the new quantity is 15, what is the percent increase? percent of change = amount of change/original quantity
What is 50%
400
Write the ratio 1/9 km to 2/7 km in simplest form.
What is 7/18
400
You bike 12 miles in 1/5 hours at a steady rate. What equation represents the proportional relationship between the x hours you bike and the distance y in miles that you travel? y = ________
What is y = 8x
400
Corey deposited $9,000 into a savings account 3 years ago. The simple interest rate is 4$. What would Corey's new account balance be? (HINT: need to find the interest first) I = Prt I = simple interest P = principal r = interest rate t = time in years
What is $10,080 (Interest is $1,080)
400
-1/2 + (-1/4) =
What is -3/4
400
At noon, a tank contained 20 cm of water. After several hours, it contained 16 cm of water. What is the percent decrease of water in the tank? percent of change = amount of change/original quantity
What is 20%
500
Write this rate as a unit rate. Use pencil and paper. 11/3 pounds to 4/9 gallon. (11/3 รท 4/9)
What is 8 1/4 pounds per gallon
500
You make a scale drawing of a banner for a school dance. You use a scale of 1 inch = 3 feet. The scale drawing has a width of 6 inches. What is the actual width of the banner?
What is 18 feet.
500
Suppose that $3,000 is invested in an account at 7% interest. Find the account balance after 8 years if the interest is compounded annually. B = P(1+r)^n B = final balance P = Principal r = interest rate per period (decimal) n = number of interest periods
What is $5,154
500
-3/4 - (-7/24)
What is -11/24
500
7/10 - (1 3/10) - (-3 1/2)
What is 2 9/10
M
e
n
u