Ratios/Rates and Unit Rates

Front

What is a ratio?

Back

A ratio is a comparison of two quantities, showing how many times one value contains or is contained within the other.

Front

How do you write a ratio?

Back

Ratios can be written in three ways: using a colon (e.g., 3:4), as a fraction (e.g., 3/4), or with the word 'to' (e.g., 3 to 4).

Front

What is a unit rate?

Back

A unit rate is a rate in which the second quantity is one unit. For example, if you travel 60 miles in 2 hours, the unit rate is 30 miles per hour.

Front

How do you find a unit rate?

Back

To find a unit rate, divide the first quantity by the second quantity. For example, if you have 12 apples for $3, the unit rate is $1 per apple.

Front

What is the ratio of blue marbles to red marbles if there are 3 blue and 7 red?

Back

The ratio of blue marbles to red marbles is 3:7.

Front

If a mother buys 8 products for $14, what is the price per product?

Back

The price per product is $1.75.

Front

What is the ratio of books not read to all books if 18 out of 29 books have been read?

Back

The ratio of books not read to all books is 11:29.

Front

What does it mean if a rate is equivalent to 15 miles per hour?

Back

It means that for every hour, 15 miles are traveled.

Front

If a car gets 6 miles per gallon, what is the equivalent rate for 18 miles?

Back

The equivalent rate is 18 miles to 3 gallons.

Front

How can you express the ratio of 8 green marbles to the total of 20 marbles?

Back

The ratio is 8:20, which can be simplified to 2:5.