Adding fractions with different signs
This video is from the Khan Academy subject of Math on the topic of Arithmetic and pre-algebra and it covers Adding fractions with unlike denominators word problem.
More practice carrying with multiple digit numbers
Addition and Subtraction with Significant Figures
This lesson provides a brief definition of the additive inverse and follows with examples.
How I subtract in my head
In this lesson, students will use and analyze equations to determine dBay profit on new technology. This lesson is designed for students who already know how to determine linear equations for a coordinate graph.
In this introduction, the instructor describes how to relate ratio to gears in a car transmission.
Application problems involving units of weight
The goal of this lesson plan from NCTM is to help students develop algebraic thinking skills. Several word problems requiring algebraic equations are included. Graphics calculators are also utilized in this lesson.
In this video, the instructor demonstrates how to solve a radical equation.
U06_L2_T3_we1 Applying the Metric System
Approximating Square Roots
This video is from the Khan Academy subject of Math on the topic of Arithmetic and pre-algebra and it covers Area model for multiplication.
This lesson demonstrates how to determine the perimeter of triangles and parallelograms (and a combination of both). The lesson follows with an opportunity to practice the skill.
Associative Law of Addition
Associative Law of Multiplication
Introduction to addition. Multiple visual ways to represent addition.
Introduction to multiplication
This tutorial, from West Texas A and M, covers the basic definition and rules of exponents.