Ratios, Proportions, & Percent Review

Front

What is a ratio?

Back

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

Front

How do you express a ratio?

Back

Ratios can be expressed 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 proportion?

Back

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

Front

How do you solve a proportion?

Back

To solve a proportion, cross-multiply the terms and set the products equal to each other.

Front

What is a percent?

Back

A percent is a ratio that compares a number to 100, represented by the symbol '%'. For example, 50% means 50 out of 100.

Front

How do you convert a fraction to a percent?

Back

To convert a fraction to a percent, divide the numerator by the denominator and then multiply by 100.

Front

What is the formula to find the percentage of a number?

Back

The formula is: Percentage = (Part/Whole) x 100.

Front

If 60% of 40 is calculated, what is the result?

Back

24, because 60% of 40 is (60/100) x 40 = 24.

Front

What is the relationship between ratios and proportions?

Back

Ratios are used to compare two quantities, while proportions show that two ratios are equivalent.

Front

How do you find the missing value in a ratio?

Back

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