  # Vídeo classPrealgebra Lecture 2.1: Introduction to Integers

Prealgebra Lecture 2.1: Introduction to Integers

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## Course content 0h14m

### Prealgebra Lecture 1.2: Studying Place Value and Expanded Form of Numbers

Prealgebra Lecture 1.2: Studying Place Value and Expanded Form of Numbers 0h44m

### Prealgebra Lecture 1.3: Addition and Subtraction of whole numbers. Perimeter.

Prealgebra Lecture 1.3: Addition and Subtraction of whole numbers. Perimeter. 0h23m

### Prealgebra Lecture 1.4: How to do Rounding and Estimating of Whole Numbers

Prealgebra Lecture 1.4: How to do Rounding and Estimating of Whole Numbers 0h45m

### Prealgebra Lecture 1.5: Multiplication of Whole Numbers. Area of a Rectangle

Prealgebra Lecture 1.5: Multiplication of Whole Numbers. Area of a Rectangle 0h46m

### Prealgebra Lecture 1.6: Division of Whole Numbers

Prealgebra Lecture 1.6: Division of Whole Numbers 1h15m

### Prealgebra Lecture 1.7: Studying Exponents and Order of Operations

Prealgebra Lecture 1.7: Studying Exponents and Order of Operations 1h01m

### Prealgebra Lecture 1.8: An Introduction to Variables and Algebraic Expressions

Prealgebra Lecture 1.8: An Introduction to Variables and Algebraic Expressions 0h38m

### Prealgebra Lecture 2.1: Introduction to Integers

Prealgebra Lecture 2.1: Introduction to Integers 0h37m

### Prealgebra Lecture 2.2: Adding of Integers. Using the Addition Rule for Integers

Prealgebra Lecture 2.2: Adding of Integers. Using the Addition Rule for Integers 0h56m

### Prealgebra Lecture 2.3: Subtracting Integers. How to Change Subtraction to Addition

Prealgebra Lecture 2.3: Subtracting Integers. How to Change Subtraction to Addition 0h50m

### Prealgebra Lecture 2.4: Multiplying and Dividing Integers

Prealgebra Lecture 2.4: Multiplying and Dividing Integers 2h00m

### Prealgebra Lecture 2.5: Studying Order of Operations with Integers

Prealgebra Lecture 2.5: Studying Order of Operations with Integers 1h22m

### Prealgebra Lecture 2.6: An Introduction to Solving Basic Equations

Prealgebra Lecture 2.6: An Introduction to Solving Basic Equations 2h17m

### Prealgebra Lecture 3.1: Simplifying Algebraic Expressions

Prealgebra Lecture 3.1: Simplifying Algebraic Expressions 1h23m

### Prealgebra Lecture 3.2: Solving Basic Equations

Prealgebra Lecture 3.2: Solving Basic Equations 1h14m

### Prealgebra Lecture 3.3: Solving General Equations. How to Solve Any Equation in Prealgebra

Prealgebra Lecture 3.3: Solving General Equations. How to Solve Any Equation in Prealgebra 0h28m

### Prealgebra Lecture 3.4: Translating Sentences Into Equations. Intro to Word Problems

Prealgebra Lecture 3.4: Translating Sentences Into Equations. Intro to Word Problems 0h30m

### Prealgebra Lecture 4.1: Introduction to Fractions

Prealgebra Lecture 4.1: Introduction to Fractions 1h16m

### Prealgebra Lecture 4.2: Prime Factorization and Simplification of Fractions

Prealgebra Lecture 4.2: Prime Factorization and Simplification of Fractions 1h53m

### Prealgebra Lecture 4.3: How to Multiply and Divide Fractions

Prealgebra Lecture 4.3: Multiplying and Dividing Fractions