Chapter 3 Review

Front

What is the formula to calculate the percentage of a number?

Back

Percentage = (Part / Whole) * 100

Front

What is the definition of a unit rate?

Back

A unit rate is a comparison of two different quantities when they are combined together. It is expressed as a quantity per 1 unit of another quantity.

Front

How do you calculate the discount amount on an item?

Back

Discount Amount = Original Price * Discount Rate

Front

What is the formula to find the final price after a discount?

Back

Final Price = Original Price - Discount Amount

Front

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

Back

Calculate the price per unit for each option and compare them.

Front

What is the method to find the average of a set of numbers?

Back

Average = (Sum of all values) / (Number of values)

Front

How do you convert a fraction to a percentage?

Back

Fraction to Percentage = (Numerator / Denominator) * 100

Front

What does it mean to score a certain percentage on a test?

Back

It means the number of correct answers divided by the total number of questions, expressed as a percentage.

Front

How do you calculate the increase in percentage between two numbers?

Back

Percentage Increase = ((New Value - Old Value) / Old Value) * 100

Front

What is the definition of a ratio?

Back

A ratio is a relationship between two numbers indicating how many times the first number contains the second.