Ratios & Ratio Tables

Front

What is a ratio?

Back

A ratio is a comparison of two quantities by division, showing how many times one value contains or is contained within the other.

Front

How do you write a ratio?

Back

Ratios can be written in three ways: as a fraction (1/2), with a colon (1:2), or with the word 'to' (1 to 2).

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 apples to oranges is 2:3, how many oranges are there if there are 10 apples?

Back

There are 15 oranges. (10 apples * (3/2) = 15 oranges)

Front

What is the missing value in the ratio table if the ratio is 4:5 and the first value is 16?

Back

The missing value is 20. (16 * (5/4) = 20)

Front

How do you solve a proportion?

Back

To solve a proportion, cross-multiply the values and then divide to find the missing variable.

Front

Back

x = 6.

Front

Back

x = 15.

Front

If 2 tablets of iodine are needed for 1 quart of water, how many tablets are needed for 10 quarts?

Back

20 tablets. (2 tablets * 10 quarts = 20 tablets)

Front

What is the relationship between ratios and proportions?

Back

Ratios compare two quantities, while proportions state that two ratios are equal.