Review Of Ratios, Rates and Percents

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 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

What is a percent?

Back

A percent is a ratio expressed as a fraction of 100, indicating how many parts out of 100.

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 then multiply by 100.

Front

What does it mean for two quantities to be proportional?

Back

Two quantities are proportional if they maintain a constant ratio or rate.

Front

If 8 apples cost $4.72, how do you find the cost per apple?

Back

Divide the total cost by the number of apples: $4.72 ÷ 8 = $0.59 per apple.

Front

What is the formula to find the percent of a quantity?

Back

The formula is: (part/whole) x 100 = percent.

Front

If 15 out of 25 boys chose to go swimming, how do you calculate the percent?

Back

(15/25) x 100 = 60%.

Front

What is the greatest common factor (GCF) of 35 and 14?

Back

The GCF of 35 and 14 is 7.