This is a list of all Virtual Nerd tutorials in Middle School Math, organized by topic.

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### Number Sense and Algebraic Reasoning

#### Operations With Whole Numbers

- How Do You Estimate a Multiplication Problem by Rounding?
- How Do You Multiply a Two-Digit Number by a One-Digit Number?
- How Do You Write a Whole Number Given in Expanded Form in Standard Form and in Words?
- What's a Dividend and What's a Divisor?
- What are the Identity Properties of Addition and Multiplication?
- How Do You Write a Whole Number Given in Standard Form in Expanded Form and in Words?
- How Do You Multiply a Three-Digit Number by a One-Digit Number?
- What is the Commutative Property of Multiplication?
- How Do You Write a Whole Number Given in Words in Standard Form and in Expanded Form?
- How Do You Divide a Two-Digit Number by a One-Digit Number With No Remainder?
- What is the Commutative Property of Addition?
- How Do You Do Long Multiplication?
- How Do You Solve a Word Problem by Dividing Whole Numbers?
- How Do You Add Whole Numbers?
- How Do You Compare Two Whole Numbers?
- How Do You Divide a Two-Digit Number by a One-Digit Number With a Remainder?
- What is Multiplication?
- How Do You Divide a Three-Digit Number by a One-Digit Number?
- What is the Associative Property of Addition?
- How Do You Subtract Whole Numbers?
- How Do You Put Whole Numbers in Order From Least to Greatest?
- What is the Associative Property of Multiplication?
- How Do You Multiply a Two-Digit Number by a Two-Digit Number?
- How Do You Figure Out What a Remainder Means When You're Dividing?
- What is Division?
- What are Natural and Whole Numbers?
- How Do You Divide Whole Numbers?
- How Do You Find the Value of a Digit in a Whole Number?
- How Do You Multiply a Two-Digit Number by a Two-Digit Number Using Partial Products?
- How Do You Do Long Division?
- How Do You Put Whole Numbers in Order From Greatest to Least?
- What is Place Value for Whole Numbers?

#### Powers and Exponents

#### Order of Operations

#### Solving Equations With Mental Math

#### Variables and Expressions

- How Do You Determine Which Operations to Use in a Word Problem?
- What are Some Words You Can Use to Write Word Problems?
- What Are Numerical and Algebraic Expressions?
- How Do You Evaluate an Algebraic Expression with One Variable?
- What is a Variable?
- How Do You Translate a Phrase with One Variable and Number Into a Mathematical Expression?
- How Do You Translate Phrases into Numerical Expressions?
- How Do You Complete a Table By Plugging in Values?
- What is a Constant?
- How Do You Write a Rule for a Table?
- How Do You Evaluate an Algebraic Expression with Two Variables?

#### The Distributive Property

#### Sequences and Patterns

#### A Problem-Solving Plan

- How Do You Solve a Problem by Drawing a Diagram?
- How Do You Solve a Problem by Making a Table and Finding a Pattern?
- How Do You Solve a Problem Using the Guess, Check, and Revise Method?
- How Do You Solve a Problem by Making an Organized List?
- How Do You Solve a Word Problem Where You Multiply Fractions and Work Backwards?
- How Do You Solve a Problem Using Logical Reasoning?
- How Do You Use the Graph of a Linear Equation to Solve a Word Problem?
- How Do You Make a Problem Solving Plan?

### Measurement

#### The Customary System

- How Do You Determine the Best Customary Units to Measure a Weight?
- How Do You Determine the Best Customary Units to Measure a Capacity?
- What are the Customary Units of Weight?
- What are the Customary Units of Capacity?
- What are the Customary Units of Length?
- How Do You Measure an Object in Inches Using a Ruler?

#### Changing Customary Units

#### The Metric System

- What are the Metric Units of Mass?
- How Do You Measure an Object to the Nearest Centimeter Using a Ruler?
- How Do You Determine the Best Metric Units to Measure a Mass?
- How Do You Measure an Object in Millimeters Using a Ruler?
- How Do You Determine the Best Metric Units to Measure a Capacity?
- What are the Metric Units of Length?
- What is Density?
- What are the Metric Units of Capacity?

#### Changing Metric Units

### Decimals

### Number Theory and Fractions

#### Divisibility

#### Factors and Prime Factorization

#### Greatest Common Factor

- How Do You Find the Greatest Common Factor of Two Numbers Using Prime Factorization?
- How Do You Find the Greatest Common Factor of Three Numbers?
- How Do You Factor a Greatest Common Factor Out of an Algebraic Expression?
- How Do You Find the Greatest Common Factor of Two Numbers by Listing Their Factors?
- What is a Greatest Common Factor?

#### Equivalent Fractions

#### Least Common Multiple

#### Comparing and Ordering Fractions

#### Mixed Numbers and Improper Fractions

#### Fractions and Decimals

### Adding and Subtracting Fractions

#### Adding and Subtracting Fractions with Like Denominators

#### Adding and Subtracting Fractions with Unlike Denominators

#### Adding and Subtracting Mixed Numbers

- How Do You Subtract Mixed Fractions with Different Denominators by Regrouping?
- How Do You Subtract Mixed Fractions with Different Denominators by Converting to Improper Fractions?
- How Do You Add Mixed Fractions with the Same Denominator?
- How Do You Add Mixed Fractions with Different Denominators by Converting to Improper Fractions?
- How Do You Subtract Mixed Fractions with the Same Denominator?

#### Solving Fraction Equations With Addition and Subtraction

- How Do You Solve an Equation With Fractions With Different Denominators Using Subtraction?
- How Do You Solve an Equation With Fractions With The Same Denominators Using Addition?
- How Do You Solve an Equation With Fractions With The Same Denominators Using Subtraction?
- How Do You Solve an Equation With Fractions With Different Denominators Using Addition?

### Multiplying and Dividing Fractions

### Ratios, Proportions, and Percent

#### Ratios and Rates

- How Do You Convert a Rate To A Unit Rate?
- How Do You Use Unit Rates to Compare Rates?
- What's a Ratio?
- How Do You Find Equivalent Ratios by Making a Table?
- What are Rates and Unit Rates?
- What are Equivalent Ratios?
- How Do You Use a Table of Equivalent Ratios to Predict a Value?
- How Do You Write Ratios From a Table?
- How Do You Write a Ratio From a Word Problem?
- How Do You Find Equivalent Ratios?
- How Do You Write a Ratio in Simplest Form?

#### Proportions

#### Scale Drawings and Models

#### Percents

- How Do You Turn a Decimal into a Percent?
- How Do You Turn a Fraction Into a Percent?
- How Do You Turn a Percent into a Decimal?
- How Do You Figure Out a Percent From a Part to Part Ratio?
- How Do You Figure Out a Percent From a Part to Whole Ratio?
- How Do You Turn a Percent Into a Fraction?
- What's a Percent?

#### Percents, Decimals, and Fractions

#### Percent of a Number

#### Solving Percent Problems and Estimating With Percents

- How Do You Figure Out a Tip?
- How Do You Estimate a Sale Price?
- How Do You Estimate a Percent?
- How Do You Use an Equation to Find a Whole?
- How Do You Use a Proportion to Find What Percent a Part is of a Whole?
- How Do You Solve a Word Problem Using a Percent Proportion?
- How Do You Set Up a Percent Proportion from a Word Problem?
- How Do You Use Mental Math to Estimate a Percent?
- How Do You Find Percents Mentally Using Fractions?
- How Do You Use Compatible Numbers to Estimate a Part of a Whole?
- How Do You Use a Proportion to Find a Whole?

### Geometric Figures

#### Basics of Geometry

#### Angles

- What is an Angle?
- What are Complementary Angles?
- What is a Transversal?
- How Do You Use Complementary Angles to Find a Missing Angle?
- What are Supplementary Angles?
- What are Vertical Angles?
- What are Acute, Obtuse, Right, and Straight Angles?
- How Do You Use Supplementary Angles to Find a Missing Angle?
- What is a Degree?

#### Classifying Polygons

- What are Acute, Obtuse, and Right Triangles?
- What is a Parallelogram?
- What is a Regular Polygon?
- What is a Trapezoid?
- What is a Polygon?
- What is a Rhombus?
- What is a Square?
- How Do You Classify Triangles?
- How Do You Classify Quadrilaterals?
- What is a Triangle?
- How Do You Find a Missing Angle in a Triangle?
- What are Equilateral, Isosceles, and Scalene Triangles?
- What is a Rectangle?
- What is a Quadrilateral?
- What is the Triangle Sum Theorem?

#### Congruent and Similar Figures

#### Line Symmetry

### Geometry and Measurement

#### Perimeter and Area of Rectangles

#### Areas of Parallelograms, Triangles, and Trapezoids

- How Do You Find the Area of a Triangle?
- How Do You Find the Area of a Parallelogram?
- What is the Formula for the Area of a Trapezoid?
- What is the Formula for the Area of a Triangle?
- How Do You Find the Area of a Composite Figure?
- What is the Formula for the Area of a Parallelogram?
- How Do You Find the Area of a Trapezoid?

#### Circumference and Area of Circles

- How Do You Find the Area of a Circle if You Know the Diameter?
- How Do You Find the Area of a Circle if You Know the Radius?
- How Do You Find the Circumference of a Circle if You Know the Radius?
- How Do You Find the Circumference of a Circle if You Know the Diameter?
- What is the Formula for the Area of a Circle?
- What is a Circle?
- What is Circumference?
- What is Pi?
- How Do You Find the Diameter of a Circle if You Know its Radius?

#### Solid Figures

#### Volume of Prisms and Cylinders

#### Surface Area

### Integers and the Coordinate Plane

#### Integers and Absolute Value

- How Do You Represent Real World Situations Using Integers?
- What is Absolute Value?
- What are Positive and Negative Numbers?
- What Does Absolute Value Mean In the Real World?
- What is the Opposite, or Additive Inverse, of a Number?
- How Do You Find the Absolute Value of Positive and Negative Numbers?
- What's an Integer?
- What is the Number Line?

#### Comparing and Ordering Integers

#### Adding Integers

#### Subtracting Integers

#### Multiplying and Dividing Integers

#### The Coordinate Plane

- What is the Origin?
- What is the X-Coordinate?
- How Do You Graph Points in the Coordinate Plane?
- What is the Y-Axis?
- How Do You Graph Ordered Pairs in Each Quadrant?
- What is the Coordinate Plane?
- What is the Y-Coordinate?
- How Do You Find the Area of an Irregular Figure in the Coordinate Plane?
- How Do You Graph a Rectangle on a Coordinate Plane?
- How Do You Find the Perimeter of a Rectangle in the Coordinate Plane?
- What is an Ordered Pair?
- What is the X-Axis?
- How Do You Identify Points on a Graph?
- How Do You Find the Area of a Rectangle in the Coordinate Plane?
- What are Quadrants in the Coordinate Plane?

#### Transformations in the Coordinate Plane

- What is a Line of Reflection?
- What is a Rotation?
- How Do You Use a Graph to Reflect a Figure Over the X-Axis?
- What is a Transformation?
- How Do You Use a Graph to Translate a Figure Horizontally?
- How Do You Use a Graph to Translate a Figure Vertically?
- What is a Reflection?
- What is a Translation?
- What is an Image?
- How Do You Use a Graph to Reflect a Figure Over the Y-Axis?

### Equations and Functions

#### Expressions and Equations

#### Solving Addition Equations

#### Solving Subtraction Equations

#### Solving Multiplication Equations

#### Solving Division Equations

#### Functions

#### Graphing Functions

#### Solving Two-Step Equations

#### Inequalities

- How Do You Solve a One-Step Inequality Using Subtraction?
- What's an Inequality?
- How Do You Graph the Intersection of Two Inequalities?
- How Do You Graph an Inequality on a Number Line?
- What's a Compound Inequality?
- What Are Some Words We Use To Write Inequalities?
- How Do You Write an Inequality from a Number Line Graph?
- How Do You Graph the Union of Two Inequalities?

### Probability and Statistics

#### Probability

#### Finding Outcomes

- What is a Permutation?
- How Do You Determine All the Possible Outcomes of an Experiment?
- How Do You Find a Number of Permutations Using the Fundamental Counting Principle?
- How Do You Use the Fundamental Counting Principle to Count the Number of Outcomes in a Sample Space?
- What is the Fundamental Counting Principle?
- What is a Sample Space?
- How Do You Use a Tree Diagram to Count the Number of Outcomes in a Sample Space?

#### Probability of Independent Events and Areas

#### Samples and Sampling Methods

#### Graphs and Data Displays

#### Frequency Tables and Line Plots

#### Mean, Median, Mode, and Range

#### Stem-and-Leaf Plots

#### Measures of Variation