Review Of Ratios, Rates and Percents

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., 2:3), as a fraction (e.g., 2/3), or with the word 'to' (e.g., 2 to 3).

Front

What is a rate?

Back

A rate is a specific kind of ratio that compares two quantities with different units, such as speed (miles per hour) or price per item.

Front

What is a percent?

Back

A percent is a ratio that compares a number to 100, often used to express how much of a whole is represented by a part.

Front

How do you convert a fraction to a percent?

Back

To convert a fraction to a percent, divide the numerator by the denominator and then multiply by 100.

Front

What is the ratio of dogs to all pets if there are 2 dogs, 4 cats, and 5 hamsters?

Back

The ratio of dogs to all pets is 2:11.

Front

If the ratio of people to cars is 3:5 and there are 30 people, how many cars are there?

Back

There are 50 cars.

Front

What is 20% of 75?

Back

20% of 75 is 15.

Front

If 15 out of 25 boys chose to go swimming, what percent is that?

Back

That is 60%.

Front

Are the fractions 1/2 and 20/40 equivalent?

Back

Yes, 1/2 is equivalent to 20/40.