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 (a/b), with a colon (a:b), or with the word 'to' (a to b).

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 identify relationships between the 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. (Using the ratio 2:3, if 2 parts represent 10 apples, then 3 parts represent 15 oranges.)

Front

What is a proportion?

Back

A proportion is an equation that states that two ratios are equal.

Front

Back

x = 12.

Front

What is the cross-multiplication method?

Back

Cross-multiplication is a method used to solve proportions by multiplying the numerator of one ratio by the denominator of the other ratio.

Front

Back

x = 10.

Front

What is the missing value in the ratio table if the ratio is 4:5 and the first value is 20?

Back

The missing value is 25.

Front

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

Back

To find a missing value, set up a proportion using the known values and solve for the unknown.