Ratios and Rates

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

How do you calculate a unit rate?

Back

To calculate a unit rate, divide the quantity of one item by the quantity of another item, ensuring the second quantity is 1.

Front

What is the formula for finding the average number of items per group?

Back

The formula is: Average = Total number of items / Number of groups.

Front

How do you determine which deal is better when comparing prices?

Back

Calculate the unit price for each option and compare them; the lower unit price represents the better deal.

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 or dollars per item.

Front

How do you convert a rate to a unit rate?

Back

To convert a rate to a unit rate, divide both quantities by the same number to simplify the ratio to one unit.

Front

What is the significance of finding the cost per item?

Back

Finding the cost per item helps in comparing prices and determining the best value for money.

Front

How can you compare two different rates?

Back

Convert both rates to the same unit (e.g., per minute or per second) before comparing them.

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.

Front

How do you find the total cost when given a unit price?

Back

Multiply the unit price by the total number of items to find the total cost.