第 20 节，共 44 节
Prealgebra Lecture 4.3: How to Multiply and Divide Fractions
课时44 节课
- 1Prealgebra Lecture 1.2: Studying Place Value and Expanded Form of Numbers
- 2Prealgebra Lecture 1.3: Addition and Subtraction of whole numbers. Perimeter.
- 3Prealgebra Lecture 1.4: How to do Rounding and Estimating of Whole Numbers
- 4Prealgebra Lecture 1.5: Multiplication of Whole Numbers. Area of a Rectangle
- 5Prealgebra Lecture 1.6: Division of Whole Numbers
- 6Prealgebra Lecture 1.7: Studying Exponents and Order of Operations
- 7Prealgebra Lecture 1.8: An Introduction to Variables and Algebraic Expressions
- 8Prealgebra Lecture 2.1: Introduction to Integers
- 9Prealgebra Lecture 2.2: Adding of Integers. Using the Addition Rule for Integers
- 10Prealgebra Lecture 2.3: Subtracting Integers. How to Change Subtraction to Addition
- 11Prealgebra Lecture 2.4: Multiplying and Dividing Integers
- 12Prealgebra Lecture 2.5: Studying Order of Operations with Integers
- 13Prealgebra Lecture 2.6: An Introduction to Solving Basic Equations
- 14Prealgebra Lecture 3.1: Simplifying Algebraic Expressions
- 15Prealgebra Lecture 3.2: Solving Basic Equations
- 16Prealgebra Lecture 3.3: Solving General Equations. How to Solve Any Equation in Prealgebra
- 17Prealgebra Lecture 3.4: Translating Sentences Into Equations. Intro to Word Problems
- 18Prealgebra Lecture 4.1: Introduction to Fractions
- 19Prealgebra Lecture 4.2: Prime Factorization and Simplification of Fractions
- 20Prealgebra Lecture 4.3: How to Multiply and Divide Fractions
- 21Prealgebra Lecture 4.4: How to Add and Subtract Fractions. Finding LCD.
- 22Prealgebra Lecture 4.5: Add/Subract Fractions When the Fractions do Not Have a Common Denominator.
- 23Prealgebra Lecture 4.6: Simplifying Complex Fractions and Order of Operations with Fractions.
- 24Prealgebra Lecture 4.7: Operations With Mixed Number Fractions
- 25Prealgebra Lecture 4.8: Solving Equations With Fractions
- 26Prealgebra Lecture 5.1: Introductions to Decimal Numbers
- 27Prealgebra Lecture 5.2: Adding and Subtracting Decimals Using the Addition Rule
- 28Prealgebra Lecture 5.3: Multiplying Decimal Numbers
- 29Prealgebra Lecture 5.4: Dividing Decimal Numbers
- 30Prealgebra Lecture 5.5: Translating Fractions to Decimals and Order of Operations with Decimals
- 31Prealgebra Lecture 5.6: Solving Equations with Decimals
- 32Prealgebra Lecture 5.7: Finding Averages: The Mean, Median, and Mode
- 33Prealgebra Lecture 6.1: Writing and Simplifying Ratios and Rates.
- 34Prealgebra Lecture 6.2: Solving Equations with Proportions.
- 35Prealgebra Lecture 6.3: Applications of Solving Equations with Proportions.
- 36Prealgebra Lecture 6.4: Simplifying Square Roots and Solving Problems with the Pythagorean Theorem.
- 37Prealgebra Lecture 7.1: Introduction to Percent and Percentages
- 38Prealgebra Lecture 7.3: Using the Basic Percent Equation. How to Solve Percent Equations
- 39Prealgebra Lecture 7.4: Finding Percent Increase and Percent Decrease
- 40Prealgebra Lecture 7.5: Solving Problems with Sales Tax, Commission, and Discount.
- 41Prealgebra Lecture 7.6: Solving Simple Interest and Compound Interest Problems.
- 42Prealgebra Lecture 10.1: Adding and Subtracting Polynomials.
- 43Prealgebra Lecture 10.2: Properties of Exponents in Polynomials. Multiplying Polynomials
- 44Prealgebra Lecture 10.3: Multiplying Polynomials by the Distributive Property.