Ratios, Rates, Percents

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 percent of change?

Back

Percent of change is calculated by taking the difference between the new value and the original value, dividing by the original value, and then multiplying by 100.

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 find the unit price?

Back

To find the unit price, divide the total price by the number of units. This helps compare prices of different quantities.

Front

What is the formula for calculating percent?

Back

Percent = (Part/Whole) x 100.

Front

If a jacket originally costs $85 and is on sale for 40% off, how much do you pay?

Back

You pay $51 after the discount.

Front

What is the unit price of Sargento cheese slices if they cost $2.48 for 10 slices?

Back

The unit price is $0.248 per slice.

Front

If Mrs. Smith reads 12 pages in 9 minutes, how long will it take her to read 360 pages?

Back

It will take her approximately 270 minutes to finish the book.

Front

What is the percent increase if a ticket price goes from $100 to $120?

Back

The percent increase is 20%.

Front

How do you convert a fraction to a percent?

Back

To convert a fraction to a percent, divide the numerator by the denominator and multiply by 100.