Ratios/Ratio Tables

Front

What is a ratio?

Back

A ratio is a relationship between two numbers indicating how many times the first number contains the second.

Front

How do you express a ratio?

Back

Ratios can be expressed in three ways: as a fraction (e.g., 2/3), with a colon (e.g., 2:3), or with the word 'to' (e.g., 2 to 3).

Front

What is a ratio table?

Back

A ratio table is a tool used to organize pairs of numbers that form a ratio, helping to visualize the relationship between the quantities.

Front

How do you find a missing value in a ratio table?

Back

To find a missing value in a ratio table, you can use equivalent ratios or proportions based on the known values.

Front

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

Back

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

Front

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

Back

To calculate the total number of items in a ratio, add all parts of the ratio together.

Front

If Luz earns $400 for 40 hours of work, how much does she earn per hour?

Back

Luz earns $10 per hour ($400 ÷ 40 hours).

Front

How do you scale a ratio?

Back

To scale a ratio, multiply or divide both parts of the ratio by the same number.

Front

What is the ratio of red marbles to yellow marbles if there are 2 red and 5 yellow marbles?

Back

The ratio of red to yellow marbles is 2:5.

Front

How many tablets of iodine are needed to disinfect 4 quarts of water if 2 tablets are needed for 1 quart?

Back

You need 8 tablets of iodine to disinfect 4 quarts of water.