Ratios Flashcard 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 to b' or a:b.

Front

How do you express a ratio as a fraction?

Back

To express a ratio as a fraction, write the first quantity as the numerator and the second quantity as the denominator.

Front

What does a ratio of 4:2 mean?

Back

A ratio of 4:2 means that for every 4 units of the first quantity, there are 2 units of the second quantity.

Front

If the ratio of girls to boys is 3:8 and there are 48 boys, how many girls are there?

Back

18 girls.

Front

What is the simplest form of the ratio 18 ounces to 3 cups?

Back

6/1.

Front

How do you find an unknown quantity in a ratio?

Back

You can use cross-multiplication or set up a proportion to find the unknown quantity.

Front

What is a tape diagram?

Back

A tape diagram is a visual model that uses rectangles to represent ratios and help solve problems involving proportions.

Front

If there are 30 kids who like grape juice, and the ratio of kids who like pineapple juice is 3:2, how many kids like pineapple juice?

Back

40 kids.

Front

What is the ratio of gray cats to total cats if there are 2 gray cats and 3 total cats?

Back

The ratio is 2:3.

Front

How do you simplify a ratio?

Back

To simplify a ratio, divide both terms by their greatest common factor.