Intro into Ratios

Front

What is a ratio?

Back

A ratio is a relationship between two numbers indicating how many times the first number contains the second.

Front

How do you simplify a ratio?

Back

To simplify a ratio, divide both terms by their greatest common divisor (GCD).

Front

What is the ratio of girls to boys if there are 7 girls and 5 boys?

Back

The ratio of girls to boys is 7:5.

Front

If there are 15 boys and 10 girls, what is the ratio of girls to the total number of students?

Back

The ratio of girls to the total number of students is 10:25 or 2:5.

Front

What is the fraction of cats to the total number of animals if there are 5 cats and 10 dogs?

Back

Front

How do you express a ratio in simplest form?

Back

To express a ratio in simplest form, divide both parts of the ratio by the same number until you cannot divide any further.

Front

What is the ratio of blue marbles to the total number of marbles if there are 6 red marbles and 9 blue marbles?

Back

The ratio of blue marbles to the total number of marbles is 9:15 or 3:5.

Front

If there are 20 kids and 18 teachers, what is the ratio of kids to total number of people?

Back

The ratio of kids to total number of people is 20:38 or 10:19.

Front

What does it mean if a ratio is expressed as 1:2?

Back

It means for every 1 unit of the first quantity, there are 2 units of the second quantity.

Front

How do you convert a ratio to a fraction?

Back

To convert a ratio to a fraction, place the first term as the numerator and the second term as the denominator.