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Unit rates and vocabulary
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Gravity
Terms in this set (20)
Ratio
a relationship between two quantities
Rate
A ratio that compares two quantities measured in different units. For example 5 inches of rain to 3 hours
Unit Rate
A rate with the value on 1 in the denominator. For example 3 books/$1
Proportion
is an equation that states two ratios are equivalent
What are 3 ways that a ratio is written?
1. using the word "to"
2. using a colon
3. in the form of a fraction
Mr. Haushalter has 3 dogs, 7 cats, and 4 children. What is the ratio of children to dogs?
4 to 3
Mr. Bahoric eats 20 hotdogs in 5 minutes. What is the unit rate?
4 hot dogs / minute
Why? 20 hotdogs divided by 5minutes is 4 hotdogs per 1 minute
A car travels 300 miles in 6 hours. How many miles does it travel per hour?
50 miles per hour
Why? 300/6 = 50 miles/1 hour
Are the ratios 1/4 and 3/12 proportional?
Yes or no? Why or why not?
YES, they are equivalent
Why? 1/4 x 3/3 = 3/12 or 3/12 divided by 3/3 = 1/4
Juan scored 49 points in 7 games. What is the unit rate?
7 points/1 game
Carla wrote 24 letters in 4 days. What is the unit rate?
6 letters/1 day
15 apples in 5 pounds. What is the unit rate?
3 apples/1 pound
There were 6 accidents in 3 months. What is the unit rate?
3 accidents/1 month
1/2 mile in 1/4 hour. What is the unit rate?
2 miles/1 hour
Why? 1/2 divided by 1/4 = 1/2 x 4/1 = 4/2 = 2 miles/1hour
1/4 cup per 2 pounds. What is the unit rate?
1/8 cup/1 pound
Why? 1/4 divided by 2/1 = 1/4 x 1/2 = 1/8 cup/1 pound
8 liters of water every 16 hours. What is the unit rate?
1/2 liter/1 hour or 0.5 liter/1 hour
Why? 8 divided by 16 = 0.5 or 1/2 liter/hour
8 pencils for $2. What is the unit rate?
4 pencils/$1
$3.00 for 6 cans. What is the unit rate?
$0.50/1 can
Why? 3 divided by 6 = 0.5
500 minutes for $25. What is the unit rate?
20 minutes/$1
Andrea hiked 12 miles at Red Rock in 4 hours. What is the unit rate?
3 miles/hour
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