Introduction to Ratios

Front

What is a Ratio?

Back

A ratio is a comparison of two quantities.

Front

How can a ratio be expressed?

Back

A ratio can be expressed as 3:4, 3 to 4, or 3/4.

Front

What is the ratio of school apps to game apps if Kelly has 5 school apps and 3 game apps?

Back

5 to 3

Front

Is the ratio 5 out of 23 kids playing the trumpet a part-to-part or part-to-whole ratio?

Back

Part-to-whole ratio.

Front

Which of the following is a real-life example of a ratio? 12 noodles, 4 meatballs : 1 cup of sauce, 1 jar of sauce, 15 desserts.

Back

4 meatballs : 1 cup of sauce.

Front

Which of the following is NOT a way to write a ratio? 3=4, 3:4, 3/4, 3 to 4.

Back

3=4.

Front

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

Back

5 to 10 or 1 to 2.

Front

What does a part-to-part ratio compare?

Back

A part-to-part ratio compares one part of a whole to another part of the same whole.

Front

What does a part-to-whole ratio compare?

Back

A part-to-whole ratio compares one part of a whole to the entire whole.

Front

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

Back

2 to 3.