Rates and Ratios

Front

What is a ratio?

Back

A ratio is a comparison of two quantities by division, showing how many times one value contains or is contained within the other.

Front

What is a rate?

Back

A rate is a specific kind of ratio that compares two different units, such as miles per hour or price per item.

Front

How do you find a unit rate?

Back

To find a unit rate, divide the quantity by the number of units to express the rate per one unit.

Front

What is the formula to calculate percentage?

Back

Percentage = (Part / Whole) x 100.

Front

How do you calculate 10% of a number?

Back

To calculate 10% of a number, divide the number by 10.

Front

If 60 is 50% of what number, how do you find that number?

Back

To find the number, divide 60 by 0.5 (or multiply by 2).

Front

What is the unit price?

Back

The unit price is the cost per single unit of a product, allowing for comparison between different sizes or brands.

Front

How do you compare unit prices?

Back

To compare unit prices, calculate the price per ounce or per item for each product and compare those values.

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 and then divide to find the unknown value.