Lecture: Factors vs. Multiples

Example: Listing Factors

Example: Working with Factors

Lecture: What Are Prime Numbers

Lecture: Prime Factorizations

Example: Finding the Prime Factorization 1

Example: Finding the Prime Factorization 2

Lecture: What Are Common Factors?

Example: Finding the Greatest Common Factor 1

Example: Finding the Greatest Common Factor 2

Example: Finding the Greatest Common Factor 3

Lecture: What Are Common Multiples?

Example: Finding the Least Common Multiple 1

Example: Finding the Least Common Multiple 2

Lecture: What Is a Simplified Fraction?

Example: Simplifying Fractions 1

Example: Simplifying Fractions 2

Example: Simplifying Fractions 3

Lecture: How to Add and Subtract Fractions

Example: Adding Fractions 1

Example: Adding Fractions 2

Example: Subtracting Fractions 1

Lecture: How to Multiply Fractions

Example: Multiplying Fractions 1

Example: Multiplying Fractions 2

Lecture: How to Divide Fractions

Example: Dividing Fractions 1

Example: Dividing Fractions 2

Lecture: What's a Percentage?

Lecture: The Three Percentage Questions

Example: Percentages 1

Example: Percentages 2

Example: Percentages 3

Example: Using Percentages: Commissions

Example: Using Percentages: Sales Tax

Example: Using Percentages: Percent Change

Example: Using Percentages: Original Cost