Ratios, Rates, Unit Rates,

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 factor.

Front

What is a rate?

Back

A rate is a specific kind of ratio that compares two quantities with different units, such as speed (distance per time).

Front

What is a unit rate?

Back

A unit rate is a rate in which the second quantity is one unit, such as miles per hour.

Front

If a car travels 300 miles in 5 hours, what is the unit rate?

Back

60 miles per hour.

Front

How do you find a unit rate from a total?

Back

Divide the total quantity by the number of units to find the unit rate.

Front

What is the formula for finding a proportion?

Back

A proportion states that two ratios are equal, often written as a/b = c/d.

Front

If 3 apples cost $1.50, what is the cost of 1 apple?

Back

$0.50 per apple.

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 is the denominator.

Front

How do you solve a proportion?

Back

Cross-multiply and then divide to find the unknown value.