Rates
Ratios
Proportions
Percents and their numbers
Dimensional Analysis
100
Riley ran 5 kilometers in 31.5 minutes. What is his rate in kilometers/minute?
.16 km/minute
100
There are 5 cats, 7 dogs, and 3 parakeets. Write the ratio of cats to parakeets in all three forms in simplest form.
5:3 5/3 5 to 3
100
4/36 = x/180
x = 20
100
9% of 40
3.6
100
The appropriate conversion factor for yards to feet
What is 3 feet / 1 yard ?
200
If Chase spends $1.25/day on Mountain Dew, how much does he spend per year?
$456.25
200
There are 25 daisies, 30 roses, and 15 pansies. Write the ratio of roses to daisies in simplest form.
6/5 6 to 5 6:5
200
45/x = 15/3
x = 9
200
220% of 18
39.6
200
Convert 48 inches to feet.
4 feet
300
Brady spent $49.99 for 450 minutes of phone time. Curtis spent $62.99 for 800 minutes of phone time. Who has the better phone plan?
Curtis has the better plan for $0.08/minute.
300
Give 2 ratios equivalent to 2:3.
4:6; 6:9
300
Eight oranges cost $1.00. How much will 5 dozen oranges cost?
$7.50
300
What number is 25% of 160?
40
300
Convert 36 feet / second to feet / minute.
2160 ft/min
400
Maddie's aunt put $75 in her savings account when she was 3. If there is $450 in the account when Maddie is 8, what is the rate at which they deposited money per year?
$75/year
400
In 20 minutes Dan can complete 18 problems. In 25 minutes, Sue can complete 21 problems. Who can complete more problems per minute?
Dan at .9 problems/minute (Sue: .84 problems/minute)
400
Sarah uses 3.5 cups of flour to make 3 dozen brownies. How many cups of flour does she need if she wants to make 24 brownies?
2 1/3 cups of flour
400
150% of 150 is what number?
225
400
Convert 20 gallons/minute to quarts/hour.
4800 quarts/hour
500
How fast are you going if it takes you 8 hours to go 3500 miles?
437.5 mph
500
Are the following ratios equivalent? 35/75 = 5/15
no, not equivalent
500
A scale drawing of a house is 1 in : 5 feet. If the living room on the scale drawing is 2.5 inches by 3.5 inches, what are the actual dimensions of the living room?
12.5 feet by 17.5 feet
500
What percent of 5 is 15?
300%
500
Convert 1,000,000 ounces/week to tons/day.
4.5 tons/day