GreeneMath | Pre-Algebra

In this course, you will master the basic concepts of pre-algebra using GreeneMath.com's three step system. These concepts are fundamental to success in higher math classes such as Algebra, Geometry, and Calculus. We will review operations with whole numbers, then move on to learn how to perform operations with integers, fractions, and decimals. We will wrap up our course by learning how to find the mean, median, and mode for a group of numbers, along with how to convert between various units of measurement.

## Whole Numbers

### Pre-Algebra Lesson #1: Place Value

Exam Solutions: Sections I - V

### Pre-Algebra Lesson #2: Expanded Form

Exam Solutions: Sections I - V

### Pre-Algebra Lesson #3: Inequalities & the Number Line

Exam Solutions: Sections I - V

### Pre-Algebra Lesson #4: Rounding Whole Numbers

Exam Solutions: Sections I - V

### Pre-Algebra Lesson #5: Properties of Addition

Exam Solutions: Sections I - V

### Pre-Algebra Lesson #6: Adding on a Number Line

Exam Solutions: Sections I - V

### Pre-Algebra Lesson #7: Vertical Addition

Exam Solutions: Sections I - V

### Pre-Algebra Lesson #8: Subtracting on a Number Line

Exam Solutions: Sections I - V

### Pre-Algebra Lesson #9: Vertical Subtraction

Exam Solutions: Sections I - V

### Pre-Algebra Lesson #10: Properties of Multiplication

Exam Solutions: Sections I - V

### Pre-Algebra Lesson #11: Vertical Multiplication

Exam Solutions: Sections I - V

### Pre-Algebra Lesson #12: Multiplication with Trailing Zeros

Exam Solutions: Sections I - V

### Pre-Algebra Lesson #13: Properties of Division

Exam Solutions: Sections I - V

### Pre-Algebra Lesson #14: Long Division

Exam Solutions: Sections I - V

### Pre-Algebra Lesson #15: Introduction to Exponents

Exam Solutions: Sections I - V

### Pre-Algebra Lesson #16: The Order of Operations

Exam Solutions: Sections I - V

## Integers

### Pre-Algebra Lesson #17: Introduction to Integers

Exam Solutions: Sections I - V

### Pre-Algebra Lesson #18: Absolute Value

Exam Solutions: Sections I - V

### Pre-Algebra Lesson #19: Adding Integers

Exam Solutions: Sections I - V

### Pre-Algebra Lesson #20: Subtracting Integers

Exam Solutions: Sections I - V

### Pre-Algebra Lesson #21: Multiplying & Dividing Integers

Exam Solutions: Sections I - V

### Pre-Algebra Lesson #22: Exponents with a Negative Base

Exam Solutions: Sections I - V

### Pre-Algebra Lesson #23: Order of Operations with Integers

Exam Solutions: Sections I - V

## Prime Numbers

### Pre-Algebra Lesson #24: Divisibility Rules for 2 - 12

Exam Solutions: Sections I - V

### Pre-Algebra Lesson #25: Factoring Whole Numbers

Exam Solutions: Sections I - V

## Fractions

### Pre-Algebra Lesson #26: Introduction to Fractions

Exam Solutions: Sections I - V

### Pre-Algebra Lesson #27: Mixed Numbers & Improper Fractions

Exam Solutions: Sections I - V

### Pre-Algebra Lesson #28: Finding the Greatest Common Divisor

Exam Solutions: Sections I - V

### Pre-Algebra Lesson #29: Simplifying Fractions

Exam Solutions: Sections I - V

### Pre-Algebra Lesson #30: Multiplying Fractions

Exam Solutions: Sections I - V

### Pre-Algebra Lesson #31: Dividing Fractions

Exam Solutions: Sections I - V

### Pre-Algebra Lesson #32: Finding the Least Common Multiple

Exam Solutions: Sections I - V

### Pre-Algebra Lesson #33: Adding & Subtracting Fractions

Exam Solutions: Sections I - V

### Pre-Algebra Lesson #34: Comparing Fractions

Exam Solutions: Sections I - V

### Pre-Algebra Lesson #35: Ratios & Rates

Exam Solutions: Sections I - V

### Pre-Algebra Lesson #36: Proportion Definition

Exam Solutions: Sections I - V

### Pre-Algebra Lesson #37: Operations with Mixed Numbers

Exam Solutions: Sections I - V

### Pre-Algebra Lesson #38: Complex Fractions

Exam Solutions: Sections I - V

## Decimals

### Pre-Algebra Lesson #39: Decimal Fractions

Exam Solutions: Sections I - V

### Pre-Algebra Lesson #40: Comparing & Rounding Decimals

Exam Solutions: Sections I - V

### Pre-Algebra Lesson #41: Adding & Subtracting Decimals

Exam Solutions: Sections I - V

### Pre-Algebra Lesson #42: Multiplying Decimals

Exam Solutions: Sections I - V

### Pre-Algebra Lesson #43: Dividing Decimals

Exam Solutions: Sections I - V

### Pre-Algebra Lesson #44: Changing Fractions to Decimals

Exam Solutions: Sections I - V

### Pre-Algebra Lesson #45: Percentages

Exam Solutions: Sections I - V

## Measurement

### Pre-Algebra Lesson #46: Mean, Median, & Mode

Exam Solutions: Sections I - V

### Pre-Algebra Lesson #47: Converting between U.S. Units

Exam Solutions: Sections I - V

### Pre-Algebra Lesson #48: Converting between Metric Units

Exam Solutions: Sections I - V