Curated OER
How Do You Figure Out Whether a Percent of Change is an Increase or a Decrease?
Another word problem to figure out. Well, first off you are trying to figure out the percent of something and this means your formula will be a proportional equivalent. Once you have the known terms in the correct places you can figure...
Curated OER
What's a Percent of Change?
Learners who view this video will gain a stronger understanding of percent of change. This tutorial provides a formula and a sample problem. As the tutor completes the example, she explains and clarifies each step that she takes to find...
Curated OER
How Do You Use a Proportion to Find a Whole?
An explanation of the percent proportion formula. Identify the variables. Plug in the known values. Cross multiply. Use division property of equality to solve. A step-by-step example.
Virtual Nerd
Virtual Nerd: How Do You Solve a Proportion Using Cross Products?
Video tutorial demonstrates how to solve a percent proportion using the means-extremes property of proportions to cross multiply. [1:09]
Virtual Nerd
Virtual Nerd: What's the Means Extremes Property of Proportions?
Watch this tutorial to learn about the means-extremes property of proportions that allows you to cross multiply, taking the product of the means and setting them equal to the product of the extremes. [5:59]
Other
Algebra2go: Solving Proportions
Professor Perez's virtual classroom provides examples that demonstrate how to solve proportion problems. [7:18]