Writing Ratios Flashcard

Front

What is a ratio?

Back

A ratio is a way to compare two quantities by using division. It shows 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 is a part-to-whole ratio?

Back

A part-to-whole ratio compares a part of a group to the entire group. For example, if there are 3 apples out of 10 fruits, the part-to-whole ratio of apples is 3:10.

Front

What is a part-to-part ratio?

Back

A part-to-part ratio compares one part of a group to another part of the same group. For example, if there are 2 dogs and 3 cats, the part-to-part ratio of dogs to cats is 2:3.

Front

What is the ratio of dogs to all pets if there are 2 dogs, 4 cats, and 5 hamsters?

Back

The ratio of dogs to all pets is 2:11.

Front

How do you find the total number of items in a ratio?

Back

To find the total number of items, add all the parts of the ratio together. For example, in the ratio 2:4:5, the total is 2 + 4 + 5 = 11.

Front

What is the ratio of fiction books to total books if there are 23 fiction and 4 non-fiction books?

Back

The ratio of fiction books to total books is 23:27.

Front

If there are 5 students with Nikes and 3 students with Crocs, what is the ratio of Nikes to Crocs?

Back

The ratio of Nikes to Crocs is 5:3.

Front

What type of ratio is 15:40 in a class of boys to total students?

Back

The ratio 15:40 is a part-to-whole ratio.

Front

What is the ratio of red toy cars to all toy cars if Patrick has 2 black, 3 red, and 5 white toy cars?

Back

The ratio of red toy cars to all toy cars is 3:10.