12.4 MYF Ratio & Percent Review

Front

What is a ratio?

Back

A ratio is a comparison of two quantities that shows the relative size of one quantity to another, often expressed as 'a:b'.

Front

How do you calculate a percentage?

Back

To calculate a percentage, divide the part by the whole and then multiply by 100. For example, to find 20% of 50, calculate (20/100) * 50 = 10.

Front

If Sam rents 6 movies each month, how many movies does he rent in 5 months?

Back

30 movies (6 movies/month * 5 months = 30 movies).

Front

Julio took 24 minutes to complete 4 chores. How do you find the time per chore?

Back

Divide the total time by the number of chores: 24 minutes / 4 chores = 6 minutes per chore.

Front

What is the average speed if Jenny runs 28 miles per day for 35 days?

Back

980 miles (28 miles/day * 35 days = 980 miles).

Front

How do you express a ratio of blue circles to yellow circles if there are 5 blue circles for every 6 yellow circles?

Back

The ratio is expressed as 5:6.

Front

What does 20% of a number mean?

Back

20% of a number means 20 out of every 100 parts of that number.

Front

If Lisa has 50 stamps and gives away 20%, how many does she give away?

Back

10 stamps (20% of 50 = 10 stamps).

Front

What is the formula for finding the total number of items rented over several months?

Back

Total items = items per month * number of months.

Front

How do you find the total time taken for multiple tasks if each task takes the same time?

Back

Total time = time per task * number of tasks.