Ratio & Proportion

Front

What is a ratio?

Back

A ratio is a comparison of two quantities by division, expressed as 'a to b' or a:b.

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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 then solve for the variable.

Front

What is the simplest form of a ratio?

Back

The simplest form of a ratio is when the two quantities are expressed in their lowest terms.

Front

How do you write a ratio in simplest form?

Back

To write a ratio in simplest form, divide both terms by their greatest common divisor (GCD).

Front

What is the ratio of wins to losses if a team played 82 games and won 44?

Back

The ratio of wins to losses is 44:38.

Front

If the ratio of red marbles to blue marbles is 180:145, what is it in simplest form?

Back

The simplest form is 36:29.

Front

What does it mean if two ratios are equivalent?

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Two ratios are equivalent if they represent the same relationship between quantities.

Front

How can you check if two ratios are equivalent?

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You can check if two ratios are equivalent by cross-multiplying and comparing the products.

Front

What is the formula for finding a missing value in a proportion?

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