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., 3/1), with a colon (e.g., 3:1), or in words (e.g., 3 to 1).

Front

What is the ratio of boys to girls if there are 5 boys and 7 girls?

Back

The ratio of boys to girls is 5 to 7.

Front

How do you simplify a ratio?

Back

To simplify a ratio, divide both terms by their greatest common divisor (GCD).

Front

What is a ratio table?

Back

A ratio table is a table that shows equivalent ratios, helping to visualize the relationship between two quantities.

Front

If the ratio of green marbles to red marbles is 3 to 1, how many red marbles are there if there are 9 green marbles?

Back

There are 3 red marbles.

Front

What is the missing number in the ratio 4:12?

Back

The missing number is 12.

Front

How do you find a missing value in a ratio?

Back

To find a missing value in a ratio, set up a proportion and solve for the unknown.

Front

What is the ratio of red apples to green apples if there are 4 red apples and 3 green apples?

Back

The ratio of red apples to green apples is 4 to 3.

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.