Curated OER
How Do You Use a Shortcut to Factor a Perfect Square Trinomial?
It's not really a shortcut but an equivalent equation. That's how these two perfect square equations work. So when you see an expression written out and it fits the perfect square of a trinomial criteria it can be rewritten in the...
Curated OER
What's Negative Correlation?
If the y-value decreases as the x-value increases then you have a negative correlation. Meaning that the line-of-fit has a negative slope.
Curated OER
How Do You Add Two Negative Numbers?
A very simple explanation of adding two negative numbers together. Well, it's a mathematical explanation that includes moving the negative and using absolute value. Just watch the instructor as she shows you the steps and it will make...
Curated OER
How Do You Subtract a Positive Number from a Negative Number?
Subtract a positive number from a negative number. Switch the signs, add the terms, use absolute value, but leave the first negative outside. Confusing? Watch the instructor explain the steps to learn this method.
Curated OER
How Do You Add a Negative Number to a Positive Number?
Combine a negative number with a positive number. How? Follow along and see the instructor explain what to do.
Curated OER
How Do You Add and Subtract a Bunch of Numbers with Different Signs?
So you have an expression of positive and negative numbers and you want to add and subtract them. Do you do the operations in order that they are written? Do you combine some? Do you move them around? Do you change their signs? The...
Imagine Learning Classroom
Learn Zillion: Compare More Than Two Positive or Negative Numbers
In this lesson, you will learn about comparing more than two positive or negative numbers in real-world situations by using a number line. [5:01]
Other
Professor Freedman's Video Snippets Add/subtract Integer
Professor Ellen Freedman uses this very short video to explain how to add and subtract positive and negative integers. She offers tips on how to keep track of whether the answer is positive or negative.