M1 Lesson 2 Writing Ratios

Front

What is a ratio?

Back

A ratio is a comparison of two quantities that shows the relative size of one quantity to another.

Front

How do you write a ratio?

Back

Ratios can be written in three ways: using a colon (e.g., 3:4), as a fraction (e.g., 3/4), or with the word 'to' (e.g., 3 to 4).

Front

What does the ratio 4:2 mean?

Back

The ratio 4:2 means that for every 4 of one quantity, there are 2 of another quantity.

Front

If there are 5 apples and 10 oranges, what is the ratio of apples to oranges?

Back

The ratio of apples to oranges is 5:10, which can be simplified to 1:2.

Front

What is the relationship between the ratios 2:4 and 1:2?

Back

The ratio 2:4 can be simplified to 1:2, meaning they represent the same relationship.

Front

How can you express 'two out of every ten' as a ratio?

Back

'Two out of every ten' can be expressed as the ratio 2:10.

Front

What does a ratio of 3:4 indicate?

Back

A ratio of 3:4 indicates that for every 3 of one quantity, there are 4 of another quantity.

Front

If the ratio of boys to girls in a class is 3:5, how many girls are there if there are 12 boys?

Back

If the ratio is 3:5, then for every 3 boys, there are 5 girls. If there are 12 boys, there are 20 girls.

Front

What is the ratio of 10 to 5 expressed in simplest form?

Back

The ratio of 10 to 5 in simplest form is 2:1.

Front

How do you find equivalent ratios?

Back

To find equivalent ratios, you can multiply or divide both terms of the ratio by the same number.