Search for tag: "pre-algebra"

Multiplication and division equations ( pre-algebra / 7th grade math)

This is a beginner lesson for pre-algebra or 7th grade math — one-step equations that are solved by multiplying or dividing. First, I explain how we simplify expressions such as 5x/5 (the …

From  Mammoth2020 on July 9th, 2020 0 likes 18 plays

I teach how to solve simple linear equations where the unknown x only appears once, and can be solved by either adding the same number to both sides of the equation, or subtracting the same number…

From  Mammoth2020 on July 9th, 2020 0 likes 0 plays

Solving equations — beginner lesson — examples with a pan balance (pre-algebra)

This is a beginner video lesson (pre-algebra or 7th grade) explaining: WHAT are equations? What is the general idea as to how we solve equations? An equation is of the form (expression) =…

From  Mammoth2020 on June 29th, 2020 0 likes 32 plays

The Distributive Property (pre-algebra)

In this basic lesson I show several examples of using the distributive property of multiplication over addition, including an area model (rectangles). Lastly we even touch on using the distributive…

From  Mammoth2020 on June 26th, 2020 0 likes 23 plays

Order of Operations, Part 2 (pre-algebra)

In this second part we will solve more challenging examples that have more operations than the ones in part 1. The expressions include exponents plus other operations. In these examples, divisions…

From  Mammoth2020 on June 25th, 2020 0 likes 0 plays

Order of Operations (pre-algebra lesson)

This is the first part of the lesson on the order of operations. I start out with a mini-review of exponents and then we study the order of operations (PEMDAS rule), followed by a few solved…

From  Mammoth2020 on June 25th, 2020 0 likes 1 plays

Writing Expressions and Equations (pre-algebra)

This is a pre-algebra math lesson where I show how to write an equation to match a written sentence (2 example problems). Then we look at mathematical expressions that match a real-life situation…

From  Mammoth2020 on June 25th, 2020 0 likes 5 plays

What are Expressions and Equations? (pre-algebra)

This video lesson explains the difference between an expression and equation, gives examples of both, and shows how to write expressions from verbal descriptions. In a nutshell, an expression…

From  Mammoth2020 on June 24th, 2020 0 likes 26 plays

Unit 3 - Distributive property

From  Pcarpentergonia on October 6th, 2019 0 likes 1 plays

Unit 3 - substitution

From  Pcarpentergonia on October 6th, 2019 0 likes 0 plays

PA Lesson 12-3 Volume of Cylinders Part B

From  Ambassador on September 28th, 2019 0 likes 2 plays

Reflections Across x- and y- Axis

From  MrsBoone on September 28th, 2019 0 likes 1 plays

PA Lesson 12-5 Surface Area of Prisms

From  Ambassador on September 28th, 2019 0 likes 6 plays

unit rates and scaling up

From  Pcarpentergonia on September 28th, 2019 0 likes 0 plays

PA Lesson 12-3 Volume of Cylinders

From  Ambassador on September 28th, 2019 0 likes 0 plays

Finding slope with formula

From  Pcarpentergonia on September 28th, 2019 0 likes 3 plays