Week 15 Review: Understanding Percentages and Inequalities

Front

What is a percentage?

Back

A percentage is a way of expressing a number as a fraction of 100. It is often used to compare proportions.

Front

How do you calculate percent error?

Back

Percent error is calculated using the formula: Percent Error = |(Estimated Value - Actual Value)| / Actual Value × 100%.

Front

What is an inequality?

Back

An inequality is a mathematical statement that shows the relationship between two expressions that are not equal, using symbols like <, >, ≤, or ≥.

Front

Back

Front

What is the formula for percent increase?

Back

Percent Increase = (New Value - Original Value) / Original Value × 100%.

Front

Back

20%.

Front

What is the formula for calculating area of a rectangle?

Back

Area = Length × Width.

Front

Back

Front

What is the meaning of 'percent'?

Back

Percent means 'per hundred' and is used to describe a proportion out of 100.

Front

How do you solve an equation?

Back

To solve an equation, isolate the variable on one side of the equation using inverse operations.