Rates and Unit Rates

Front

What is a ratio?

Back

A comparison of 2 quantities.

Front

What is a unit rate?

Back

A unit rate is a ratio that compares a quantity to one unit of another quantity.

Front

How do you find the price per item when given the total cost and quantity?

Back

Divide the total cost by the number of items.

Front

What is an equivalent ratio?

Back

An equivalent ratio is a ratio that expresses the same relationship between two quantities, even if the numbers are different.

Front

If a recipe calls for 2 cups of flour for every 3 cups of sugar, what is the ratio of flour to sugar?

Back

The ratio of flour to sugar is 2:3.

Front

How do you solve a proportion?

Back

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

Front

If 5 apples cost $10, what is the cost of 1 apple?

Back

The cost of 1 apple is $2.

Front

What is the ratio of boys to girls in a class of 12 boys and 8 girls?

Back

The ratio of boys to girls is 12:8, which simplifies to 3:2.

Front

If a car travels 150 miles in 3 hours, what is the unit rate in miles per hour?

Back

The unit rate is 50 miles per hour.

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.