Writing Ratios
Unit Rate
Unit Rates with Fractions
Minutes to Hours
Definitions
100
Write a ratio for the following situation:
There are 12 boys and 8 girls in the Math Club. What is the ratio of boys to girls?
3:2
100
Find the unit rate.
Hal drove 120 miles in 3 hours. What is his speed in miles per hour?
40 mph
100
Yolanda ran 3/5 of a mile in 3/4 of an hour. How far will she run in one hour?
4/5
100
Convert 30 minutes to hours
1/2 hour
100
When using the box method, if the time given is 1/4, how many sections do you break the box into?
4
200
What is the ratio for 3 red buttons compared to 7 blue buttons?
3:7
200
Find the unit rate.
Danny bought 5 hamburgers and spent $25.75. What is the price per burger?
$5.15 per burger
200
Ian used 2/7 of a box of tissues in 1/3 of an hour. At this rate how much of the box will he use in one hour?
6/7
200
Convert 45 minutes to hours
3/4 hour
200
The bottom number of a fraction is called the....
Denominator
300
A basketball team won 8 out of 15 games. What is the ratio for wins to total games?
8:15
300
Janice used 11 cups of flour to bake 5 cakes. How many cups of flour will she need to bake one cake?
2.2 cups per cake
300
Jill uses 3 cups of cereal to make ½ batch of rice crispy treats. How much cereal would she use to make one batch of rice crispy treats?
6 cups per batch
300
Convert 40 minutes to hours
2/3 hour
300
The Unit rate must be expressed in terms of what number?
One
400
There are 20 students on the honor roll. Seven of the students are boys. Write the ratio for girls to boys.
13:7
400
Jon typed 350 words in 25 minutes. How many words did he type per minute?
14 words per minute
400
Find the unit rate for each. Tell which pair(s) has a unit rate greater than one.
A and B
400
Convert 10 minutes to hours
1/6 hour
400
How do you convert a mixed number to an improper fraction
Multiply the Denominator by the Whole number and then add to the Numerator
500
In Mrs. Risher's classes, 10 of the 85 students are left-handed. Write the ratio of left-handed students to right-handed students as a fraction in simplest form.
2/15
500
It took Kim 5 seconds to walk 12 meters. How many meters can she walk in one minute?
144 meters per minute
500
Cedrick is writing a report. It takes him 4 minutes to type 5/8 page of the report. How many hours will it take to write a full page report?
9 3/8 or 75/8
500
Convert 3 minutes to hours
1/20
500
What is the inverse (opposite) of a fraction called?
The Reciprocal