Pre Algebra - Instructional Videos
Intro to Whole Numbers
Addition and Subtraction of Whole Numbers
Multiplication and Division of Whole Numbers
Integers
Exponents
Order of Operations
Greatest Common Factors/ Least Common Multiple
Intro to Fractions
Addition and Subtraction Fractions
Multiplication and Division Fractions
Intro to Decimals
Addition and Subtraction Decimals
Multiplication and Division Decimals
Ratios and Rates
Intro to Percents
Percent, Part and Whole
Percent Word Problems
Scientific Notation
More practice:
Online Quizzes
Printable Worksheets