Ratios Pre-Test

Front

What is a ratio?

Back

A ratio is a comparison of two numbers by division.

Front

What is the difference between part-to-part and part-to-whole ratios?

Back

Part-to-part ratios compare two parts of a whole, while part-to-whole ratios compare a part to the entire whole.

Front

In a mini bag of M&Ms, if there are 16 M&Ms and 5 of them are red, what type of ratio is this?

Back

Part-to-Whole.

Front

If there are 5 boys and 7 girls, what is the ratio of girls to boys?

Back

7 to 5.

Front

In a bag of marbles with 3 blue, 2 red, and 5 yellow marbles, what is the ratio of red to yellow marbles?

Back

2 to 5.

Front

If a pet shop has 2 dogs, 4 cats, and 5 hamsters, what is the ratio of dogs to all pets?

Back

2:11.

Front

How do you express the ratio of 3 apples to 4 oranges?

Back

3 to 4.

Front

What is the ratio of 10 to 20 simplified?

Back

1 to 2.

Front

If there are 12 students in a class and 3 of them are wearing glasses, what is the ratio of students wearing glasses to total students?

Back

3 to 12 or 1 to 4.

Front

What is a part-to-part ratio? Give an example.

Back

A part-to-part ratio compares two parts of a whole. Example: In a class of 10 students, if 4 are boys and 6 are girls, the ratio of boys to girls is 4 to 6.