Rates and Ratios

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 (GCF).

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 unit rate from a given rate?

Back

To find the unit rate, divide the first quantity by the second quantity.

Front

What is the formula to calculate the price per item?

Back

Price per item = Total price / Number of items.

Front

If 40 boys are in a camp of 70 campers, what is the ratio of boys to total campers?

Back

The ratio of boys to total campers is 40:70, which simplifies to 4:7.

Front

What is the unit rate of 9 pages in 3 hours?

Back

The unit rate is 3 pages per hour.

Front

How do you convert a ratio to a fraction?

Back

To convert a ratio to a fraction, write the first quantity as the numerator and the second quantity as the denominator.

Front

What is the unit rate of 20 pounds for $4?

Back

The unit rate is 5 pounds per dollar.

Front

How do you find calories per serving?

Back

Calories per serving = Total calories / Number of servings.