Ratios and Proportions

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 simplify a ratio?

Back

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

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 then solve for the unknown variable.

Front

What is the simplest form of the ratio 40:60?

Back

The simplest form of the ratio 40:60 is 2:3.

Front

If 9 apples cost $3, what is the unit price per apple?

Back

The unit price per apple is $0.33.

Front

What is the unit rate?

Back

A unit rate is a comparison of two different quantities when they are combined into one unit.

Front

How do you find the unit price?

Back

To find the unit price, divide the total price by the number of units.

Front

What is the relationship between ratios and fractions?

Back

Ratios can be expressed as fractions, where the first quantity is the numerator and the second quantity is the denominator.

Front

What does it mean for two ratios to be equivalent?

Back

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