Write a Ratio
There are 15 cats and 30 dogs at an animal shelter. Write a ratio of dogs to cats.
*Remember you must simplify your ratio*
2 to 1
How do you calculate unit rate?
Divide
Trisha drove 45 miles in 30 minutes. How many miles could she travel in 45 minutes?
67.5 miles
25%
There are forty five teachers and 900 students going on a field trip. Write a ratio of students to teachers.
You must simplify your ratio.
20 to 1
A car has traveled 215 miles in 3 hours. What is the speed in miles per hour?
75 miles per hour
2 packages of grapes cost $7.50. What is the cost of 3 packages of grapes?
11.50
Elizabeth is working out. Her heart rate started at 60 beats per minute and it is now 90 beats per minute. What is the percent increase?
50%
Twenty-nine teachers and 406 sixth-grade students are going on a field trip to the Science Mill. Each student-teacher group will have the same number of students.
What ratio represents the number of sixth-grade students that will be assigned to each teacher at the Science Mill?
14:1
At Walmart, 2 bags of oranges cost $3. At Kroger, 5 bags of oranges cost $7. Which one has the better unit rate?
Circle your Walmart unit rate.
Box your Kroger unit rate.
Underline which one is cheaper.
Walmart is $1.50
Kroger is $1.40
Kroger is cheaper.
Margret paid for 3 pairs of socks. The total was $9.93. How much would 5 pairs of socks cost?
16.55
Marly used to run a mile in 12 minutes. It now takes her nine minutes. What is the percent decrease?
25%