Intro to Ratios

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 can a ratio be expressed?

Back

A ratio can be expressed in several ways: as a fraction (3/4), with a colon (3:4), or in words (3 to 4).

Front

What is the ratio of 4 apples to 2 bananas?

Back

The ratio is 4:2, which can be simplified to 2:1.

Front

What does it mean if a ratio is 1:3?

Back

It means for every 1 of the first quantity, there are 3 of the second quantity.

Front

If there are 10 red marbles and 5 blue marbles, what is the ratio of red to blue marbles?

Back

The ratio of red to blue marbles is 10:5, which simplifies to 2:1.

Front

What is the ratio of smiley faces to hearts if there are 4 smiley faces and 6 hearts?

Back

The ratio is 4:6, which can be simplified to 2:3.

Front

What is the missing number in the ratio 3:x = 6:12?

Back

The missing number is 6.

Front

If a recipe calls for 2 cups of flour to 3 cups of sugar, what is the ratio of flour to sugar?

Back

The ratio of flour to sugar is 2:3.

Front

What is the ratio of 15 to 25?

Back

The ratio is 15:25, which simplifies to 3:5.

Front

If a class has 12 boys and 8 girls, what is the ratio of boys to girls?

Back

The ratio of boys to girls is 12:8, which simplifies to 3:2.