Khan Academy
SAT Prep: Test 2 Section 6 Part 1
Using The Official SAT Study Guide, Sal begins another review session of eighteen problems, six of which are addressed in this video. The problems involve variables in linear equations, angles and parallel lines, and ratios. One problem...
Mathispower4u
Solve a One Step Equation by Multiplying by Reciprocal ax=c/d (Example)
Multiply the chance of success with solving equations. Viewers of an educational video learn to solve a one-step equation by multiplying by the reciprocal. The equation in question is in the form ax = c/d.
Mathispower4u
Solve a One Step Equation by Multiplying by Reciprocal (a/b)x=c/d (Example)
Flip the switch to learn about flipping coefficients when solving equations. Pupils review how to solve equations of the form (a/b)x = c/d by watching a video. They see two different ways to achieve this goal: by multiplying by the...
Flipped Math
Slopes of Parallel and Perpendicular Lines
Apply slopes and not slipping. Learners discover the relationship between slopes of parallel and perpendicular lines. Individuals use that information to find equations of lines through a given point that is either parallel or...
Mathispower4u
Solve a One Step Equation by Multiplying by Reciprocal (a/b)x=-c/d (Example)
There is more than one way to solve an equation. Scholars watch as the presenter solves a one-step equation with fraction multiplication two different ways. Viewers see how to use a reciprocal to solve the equation and also how to clear...
Corbett Maths
Reciprocals
Reciprocals is more than just flipping a fraction. Pupils watch a video to see how to find the reciprocal of any number. Individuals practice finding reciprocals of numbers including whole numbers and decimals.
Art of Problem Solving
Dividing a Sum by a Number
Divide with sums. A video provides an explanation on whether it is possible to divide a sum by a number and a number by a sum by using the distributive property. Scholars see which procedure holds up under the rules of arithmetic and...
Art of Problem Solving
Introduction to Division
Use reciprocals for the purpose of division. The video shows how to use reciprocals to rewrite division problems. Pupils see that the definition of division as the multiplication by the reciprocal works for all types of numbers.
Art of Problem Solving
What's a Reciprocal?
If there is something in addition to get to the identity, does the same exist for multiplication? Using negative numbers to talk about the identity of addition, the video asks the question whether something similar exists for...
Math Antics
Dividing Fractions
Division of fractions is more than keep, change, flip. A video explains the reason to use the reciprocal when dividing fractions. Using the interpretation of fractions as division problems, the video explains the relationship of dividing...
CK-12 Foundation
Perpendicular Lines in the Coordinate Planes: Lesson
Get the slope right with two easy steps. By placing two perpendicular lines on the coordinate plane, the video determines the relationship of the slopes of the two line lines. The resource is a part of an informative and extensive...
Krista King Math
Reciprocal Rule
Alter the reciprocal rule to work with more functions. The eighth segment in a series of 31 introduces the reciprocal rule for finding a derivative. Using the quotient rule, the video derives the reciprocal rule and creates a rule that...
FuseSchool
Reciprocal Graphs
Explore the patterns of a reciprocal function with an engaging video lesson that compares graphs of reciprocal functions to different polynomial functions. After describing the key features, the instructor explains the patterns that...
Krista King Math
Reciprocals
Teach the concept of a reciprocal using this short video lesson. A video tutorial defines a reciprocal as the multiplicative inverse and then demonstrates several examples of finding the inverse. The instructor also explains the...
National Education Association
Perpendicular and Parallel Lines
Provide the definitions of parallel and perpendicular lines, as well as the relationships between their slopes. Two examples explain the process of finding the equation of either a perpendicular or parallel line to another line through a...
Curated OER
What are Multiplicative Inverses?
How can two numbers be multiplied to get a product of one? Why is this even important? One reason this is an important skill has to do with getting rid of denominators. So learn about multiplicative inverses in this video.
Virtual Nerd
Virtual Nerd: Solving an Inequality Where You're Multiplying Positive Fractions
Watch this video tutorial to discover how to solve an inequality for a variable. Remember to perform the order of operations in reverse. [1:59]
Virtual Nerd
Virtual Nerd: What Are Multiplicative Inverses?
Numbers that when multiplied together equal 1 are called multiplicative inverses or reciprocals of each other. Learn about multiplicative inverses by watching this tutorial. [1:37]
Virtual Nerd
Virtual Nerd: How Do You Divide Mixed Numbers?
This video tutorial shows how to divide mixed fractions by converting each to an improper fraction then multiplying by the reciprocal of the divisor. [5:45]
Art of Problem Solving
Art of Problem Solving: Negative Exponents Introduction
Video tutorial uses examples to introduce negative exponents. [5:18]
Art of Problem Solving
Art of Problem Solving: Introduction to Division
Video tutorial uses examples to introduce division. [7:06]
Art of Problem Solving
Art of Problem Solving: Exponent Rules With Negative Exponents
Video tutorial uses examples to reinforce understanding of rules with negative exponents. [3:37]
Sophia Learning
Sophia: Finding a Negative Reciprocal: Lesson 3
This lesson demonstrates how to find the negative reciprocal of a positive number. It is 3 of 10 in the series titled "Finding a Negative Reciprocal."
Sophia Learning
Sophia: Finding a Negative Reciprocal: Lesson 4
This lesson demonstrates how to find the negative reciprocal of a positive number. It is 4 of 10 in the series titled "Finding a Negative Reciprocal."