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Comprehensive Pre-Algebra Help with a Personal Math Teacher

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Reviews of Our Pre-Algebra Help

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Search Our Pre-Algebra Lessons
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Pre-Algebra Scope & Sequence
Unit 1: Number Concepts 001: Place Value
    002: Comparing Numbers
    003: Rounding
Unit 2: Addition and Subtraction 004: Addition
    005: Subtraction
    006: Estimating Sums and Differences
    007: Addition and Subtraction Word Problems
Unit 3: Multiplication and Division 008: Multiplication
    009: Exponents
    010: Division
    011: Estimating Products and Quotients
    012: Multiplication and Division Word Problems
Unit 4: Properties and Rules 013: Order of Operations
    014: Grouping Symbols
    015: Variables
    016: Addition Properties
    017: Multiplication Properties
Unit 1: Integers and The Number Line 018: Graphing and Writing Integers
    019: Comparing Integers
    020: Opposites and Absolute Value
Unit 2: Integer Operations 021: Addition
    022: Subtraction
    023: Multiplication
    024: Division
    025: Order of Operations
    026: Word Problems
Unit 3: Absolute Value Operations 027: Addition and Subtraction
    028: Multiplication and Division
Unit 1: Factors and Multiples 029: Divisibility Rules
    030: Factors and Primes
    031: Prime Factorization
    032: Multiples and Least Common Multiples
    033: Greatest Common Factor
Unit 2: Fractions and Mixed Numbers 034: Introduction to Fractions
    035: Equivalent Fractions (Part I)
    036: Lowest Terms
    037: Equivalent Fractions (Part II)
    038: Improper Fractions and Mixed Numbers
Unit 3: Comparing Fractions 039: Comparing Proper Fractions
    040: Comparing Mixed Numbers and Improper Fractions
    041: Word Problems
Unit 4: Addition and Subtraction 042: Adding and Subtracting Like Fractions
    043: Adding and Subtracting Unlike Fractions
    044: Adding Mixed Numbers
    045: Subtracting Mixed Numbers
Unit 5: Multiplication and Division 046: Multiplying Fractions
    047: Multiplying Mixed Numbers
    048: Dividing Fractions
    049: Dividing Mixed Numbers
Unit 1: Decimal Concept 050: Understanding Decimals
    051: Converting Decimals to Fractions
    052: Converting Fractions to Decimals
    053: Comparing Decimals
    054: Rounding Decimals
    055: Word Problems
Unit 2: Addition and Subtraction 056: Estimating Sums and Differences
    057: Adding Decimals
    058: Subtracting Decimals
    059: Word Problems
Unit 3: Multiplication and Division 060: Multiplying Decimals by Whole Numbers
    061: Multiplying Decimals by Decimals
    062: Dividing Decimals by Whole Numbers
    063: Dividing Decimals by Decimals
    064: Word Problems
Unit 4: Scientific Notation 065: Powers of Ten
    066: Converting from Scientific to Standard Notation
    067: Converting from Standard to Scientific Notation
Unit 5: Rational and Irrational Numbers 068: Terminating and Repeating Decimals
    069: Determining if a Number is Rational or Irrational
Unit 1: Patterns 070: Patterns with Whole Numbers
    071: Patterns with Fractions, Decimals, and Integers
    072: Advanced Patterns
    073: Word Problems
Unit 2: Variables and Expressions 074: Evaluating Expressions
    075: Combining Like Terms
    076: The Distributive Property
    077: Modeling Expressions
Unit 3: One-Step Equations 078: Introduction to Equations
    079: Addition Equations
    080: Subtraction Equations
    081: Multiplication Equations
    082: Division Equations
    083: Writing and Solving Equations
Unit 4: Multi-Step Equations 084: Two-Step Equations
    085: Equations with the Variable on Both Sides
    086: Equations with the Distributive Property
    087: Modeling Two-Step Equations
Unit 5: Inequalities 088: Introduction to Inequalities
    089: Solving Inequalities
Unit 1: Ratio 090: Introduction to Ratios
    091: Equal Ratios
    092: Unit Rate
    093: Unit Price
Unit 2: Proportion 094: Introduction to Proportion
    095: Solving Proportions
    096: Word Problems
Unit 3: Percent Concept 097: Understanding Percents
    098: Fractions and Percents
    099: Decimals and Percents
Unit 4: Percent Problems 100: Percent of a Number
    101: Percent One Number is of Another
    102: Using Percent to Find a Number
    103: Percent Increase or Decrease
Unit 5: Percent Applications 104: Discount
    105: Sales Tax
    106: Interest
Unit 1: Lines and Angles 107: Points, Lines, Segments, and Rays
    108: Classifying Lines
    109: Angles
    110: Measuring Angles
    111: Complementary and Supplementary Angles
Unit 2: 2-Dimensional Figures 112: Angles of a Triangle
    113: Sides of a Triangle
    114: Polygons
    115: Quadrilaterals
    116: Circles
Unit 3: 3-Dimensional Figures 117: Classifying 3-Dimensional Figures
    118: Nets
    119: Perspective Drawings
Unit 4: Congruent and Similar Figures 120: Congruent Figures
    121: Similar Figures
    122: Problem Solving with Similar Figures
    123: Symmetry
Unit 5: Graphing 124: The Coordinate Grid
    125: Relations and Functions
    126: Evaluating and Graphing Functions
Unit 6: Transformations 127: Transformations
    128: Reflections
    129: Translations
    130: Rotations
    131: Dilations
Unit 1: Units of Measurement 132: Customary Unit Conversions
    133: Metric Unit Conversions
    134: Units of Measurement
Unit 2: Perimeter and Circumference 135: Perimeter
    136: Circumference
    137: Word Problems
Unit 3: Area 138: Area of Squares and Rectangles
    139: Area of Triangles
    140: Area of Parallelograms and Trapezoids
    141: Area of a Circle
    142: Changing Dimensions
    143: Word Problems
Unit 4: Surface Area and Volume 144: Surface Area
    145: Volume of Prisms and Pyramids
    146: Volume of Cylinders, Spheres, and Cones
    147: Word Problems
Unit 5: Right Triangles 148: Square Roots
    149: Using Square Roots to Solve Equations
    150: Pythagorean Theorem
    151: Pythagorean Triples
Unit 1: Common Graphs and Charts 152: Pictographs and Line Plots
    153: Bar Graphs
    154: Line Graphs
    155: Circle Graphs
Unit 2: Representing Data 156: Stem-and-Leaf Plots and Frequency Tables
    157: Histograms
    158: Scatterplots and Trends
    159: Misleading Graphs
Unit 3: Central Tendency 160: Range, Median, and Mode
    161: Box-and-Whisker Plots
    162: Mean
    163: Word Problems
Unit 4: Probability 164: Simple Probability
    165: Experimental Probability
    166: Probability of Independent Events
    167: Probability of Dependent Events
    168: Simulations
Unit 5: Counting Methods 169: Tree Diagrams and the Counting Principle
    170: Permutations
    171: Combinations