Ratios 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

What is a percent?

Back

A percent is a way of expressing a number as a fraction of 100. It is denoted by the symbol '%'.

Front

How do you calculate 30% of a number?

Back

To calculate 30% of a number, multiply the number by 0.30.

Front

What does 100% of a number represent?

Back

100% of a number represents the whole number itself.

Front

How do you find the percent of a part compared to a whole?

Back

To find the percent, divide the part by the whole and multiply by 100.

Front

If 50% of a book is read, how much of the book is left?

Back

50% of the book is left.

Front

In a group of 200 students, if 30% participated in an event, how many students is that?

Back

30% of 200 is 60 students.

Front

What is the formula to convert a fraction to a percent?

Back

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

Front

If Martha walked 9 times out of 25 days, what percent of the days did she walk?

Back

36% of the days.

Front

What does it mean if a student scored 75% on a test?

Back

It means the student answered 75 out of 100 questions correctly.