
Important Notice
January 11, 2014: This
free online PreAlgebra course has been replaced with a new
version that is more complete and compatible with commoncore
standards. I realize this will be an inconvenience for some of
our users, but it is an essential step that we must take.
Go to the new
PreAlgebra, version 4.1
course and be sure to reset your bookmark accordingly.
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Lessons
(Select One)
Topic 1—Whole Numbers
 Lesson 11
Introducing Whole Numbers
 Lesson 12
Naming Numbers
 Lesson 13
Rounding Whole Numbers
 Lesson 14
Adding Whole Numbers
 Lesson 15
Subtracting Whole Numbers
 Lesson 16
Multiplying Whole Numbers
 Lesson 17
Dividing Whole Numbers
 Lesson 18
Comparing WholeNumber Values
 Lesson 19
Order of Operations
 Lesson
110 Factoring
 Lesson
111
Solving Word Problems with Whole Numbers
Topic
2—Integers
 Lesson 21
Introducing Integers
 Lesson 22 Comparing Integer
Values
 Lesson 23 Introducing Absolute Values
 Lesson 24 Adding Signed Integers
 Lesson 25 Subtracting Signed Integers
 Lesson 26 Combining Integer Addition
and Subtraction
 Lesson 27 Multiplying Signed Integers
 Lesson 28 Dividing Signed Integers
 Lesson 29 Combining Integer
Multiplication and Division
 Lesson 210 Introducing Exponents
 Lesson 211
Ordering Operations with Integers
 Lesson 212 Solving Word
Problems with Integers
Topic 3—Fractions
 Lesson 31
Introducing Fractions
 Lesson 32 Converting Fractions to
Higher Terms
 Lesson 33 Reducing Fractions
 Lesson 34 Converting Between Improper
Fractions and Mixed Numbers
 Lesson 35 Multiplying Fractions and
Mixed Numbers
 Lesson 36 Dividing Fractions and
Mixed Numbers

Lesson
37
Finding Common Denominators

Lesson
38
Adding Fractions and Mixed Numbers

Lesson
39
Subtracting Fractions and Mixed Numbers

Lesson
310 Comparing Fractions

Lesson
311 Operations With Signed
Fractions
 Lesson
46
Solving Word Problems With Fractions
Topic 4—Decimals
 Lesson 41 Naming Decimals
 Lesson 42 Rounding Decimals
 Lesson 43 Adding Decimals
 Lesson 44 Subtracting Decimals
 Lesson 45 Multiplying Decimals
 Lesson 46 Dividing Decimals
 Lesson 47 Converting Between Fractions and
Decimals
Topic 5—Powers,
Exponents, and Roots
 Lesson 51 Powers
and Exponents
 Lesson 52 Square
Roots and Cube Roots
 Lesson 53 Working
with Exponents
 Lesson 54 Powers
of Ten
 Lesson 55 Working
with Scientific Notation
 Lesson 56 Engineering
Notation
 Lesson 57 Working
with Engineering Notation
Topic 6—Percent
 Lesson 61
Introducing Percents
 Lesson 62
Converting Between Percents, Decimals, and Fractions
 Lesson 63
Solving Percent Problems
 Lesson 64
Solving Word Problems With Percents
Topic 7—Powers
and Square Roots
 Lesson 71 Introducing Power Notation
 Lesson 72 Introducing Square Roots
 Lesson 73 Estimating SquareRoot
Values
Topic 8—Expressions
and Equations
 Lesson 81 Introducing Expressions and
Equations
 Lesson 82 Evaluating Algebraic
Expressions
 Lesson 83 Combining Like Terms
 Lesson 84 Using the Distributive
Property
 Lesson 85 Removing Parentheses
 Lesson 86 Working With Formulas
 Lesson 87 Solving Equations
 Lesson
88 Ratio and Proportion
Topic 9—Ratio
and Proportion
 Lesson 91 Introducing Ratios
and Proportions
 Lesson 92 Solving Proportions
 Lesson 93 Solving Problems Using Ratios and Proportions
Topic 10—Geometry
 Lesson 101
Introducing Geometric Figures
 Lesson 102
Finding Perimeter and Circumferences
 Lesson 103
Finding Areas
 Lesson 104
Finding Volumes
 Lesson 105
Working With Right Triangles
 Lesson 106 Working Geometry
Word Problems
Topic 11—Measurement
 Lesson 111
Introducing Measurements
 Lesson 112
Measuring Lengths
 Lesson 113
Measuring Weights
 Lesson 114
Measuring Capacities
 Lesson 115
Measuring Time
Topic 12—Graphing
 Lesson 121 Using
the Rectangular Coordinate Plane
 Lesson 122
Plotting Points on the Coordinate Plane
 Lesson 123
Plotting Lines on the Coordinate Plane
 Lesson 124
Graphing Linear Equations
 Lesson 125
Defining Horizontal and Vertical Lines
 Lesson 126
Finding Intercepts
 Lesson 127
Finding the Slopes of Lines
 Lesson 128
Solving Systems of Linear Equations
Topic 13—Working
With Monomials and Polynomials
 Lesson 131
Introducing Monomials and Polynomials
 Lesson 132
Adding and Subtracting Polynomials
 Lesson 133
Multiplying Monomials
 Lesson 134
Raising Monomials to a Power
 Lesson 135
Multiplying Polynomials by Monomials
 Lesson 136
Multiplying and Squaring Binomials
 Lesson 137
Multiplying Polynomials
 Lesson 138
Dividing Monomials
 Lesson 139
Dividing Polynomials by Monomials

This is a complete online study program for a
first course in prealgebra. Everything you need for the course is provided
here—online and totally free of charge.
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