5-1 Writing 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 do you write a ratio?

Back

A ratio can be written in three ways: using a colon (e.g., 2:3), using the word 'to' (e.g., 2 to 3), or as a fraction (e.g., 2/3).

Front

What does the ratio 2:1 represent?

Back

The ratio 2:1 means that for every 2 of one quantity, there is 1 of another quantity.

Front

If there are 4 hexagons and 2 circles, what is the ratio of hexagons to circles?

Back

The ratio of hexagons to circles is 4:2, which simplifies to 2:1.

Front

What is the ratio of total shapes to circles if there are 3 shapes and 1 circle?

Back

The ratio of total shapes to circles is 3:1.

Front

How do you simplify the ratio 4:2?

Back

To simplify the ratio 4:2, divide both numbers by their greatest common divisor, which is 2. The simplified ratio is 2:1.

Front

What is the ratio of stars to total shapes if there are 2 stars and 5 total shapes?

Back

The ratio of stars to total shapes is 2:5.

Front

If there are 3 stars and 7 total shapes, what is the ratio of stars to total shapes?

Back

The ratio of stars to total shapes is 3:7.

Front

What is a part-to-part ratio?

Back

A part-to-part ratio compares two different parts of a whole, such as the ratio of boys to girls in a class.

Front

What is a part-to-whole ratio?

Back

A part-to-whole ratio compares a part of a quantity to the entire quantity, such as the ratio of stars to total shapes.