Understanding Rates and Ratios Flashcard

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 cost per item.

Front

How do you convert kilometers to miles?

Back

To convert kilometers to miles, divide the number of kilometers by 1.6.

Front

What is the formula to calculate a percentage increase?

Back

To calculate a percentage increase, use the formula: New Value = Original Value × (1 + Percentage Increase).

Front

How do you find the unit price of an item?

Back

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

Front

What is sales tax?

Back

Sales tax is a percentage of the purchase price added to the total cost of an item.

Front

How do you calculate total cost including sales tax?

Back

Total Cost = Item Price + (Item Price × Sales Tax Rate).

Front

What is a unit rate?

Back

A unit rate is a rate in which the second quantity is 1, such as 50 miles per hour.

Front

How do you calculate laps per minute?

Back

To calculate laps per minute, divide the total number of laps by the total time in minutes.

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.