Corbett Maths
Negatives: Addition and Subtraction
There are no negatives in learning about negative numbers. Scholars review how to add and subtract integers by watching a short video. They first see how to use a number line to determine the sum or difference, then learn to apply...
Art of Problem Solving
Subtraction Problems
Subtraction does not work with the commutative property ... or does it? Confronted with a difficult problem, the narrator realizes that by writing the subtractions as adding a negative, he can rearrange the problem. Pupils learn that as...
Art of Problem Solving
Subtraction with Negatives Part 2
Dive deeper into subtraction. The presenter shows two more ways to use the definition of subtraction to solve subtraction problems. Using the distributive and commutative properties, pupils learn how to solve problems such as subtracting...
Art of Problem Solving
Subtraction with Negatives Part 1
What is the definition of subtraction when dealing with negatives? The short video provides the definition of subtraction. Scholars observe as the presenter applies the definition to examples with negative numbers.
Krista King Math
Opposite of a Number
While the standards don't call for negative numbers to be taught before the sixth grade, many students benefit from learning the concept earlier. A video explains what teachers mean by the opposite of a number. It includes absolute...
Math Meeting
Adding and Subtracting - Negative Numbers
Here is a video that adds visual context and a steady stream of step-by-step instructions for adding and subtracting negative integers, with the help of a number line.
Virtual Nerd
How Do You Subtract a Negative Number from a Positive Number?
Subtracting an integer is as simple as adding the opposite value. Watch this video to see an example of how to change the signs and then add the two integers. Use this as a review after you have taught this valuable skill to your middle...
Other
Algebra2 Go: Prealgebra: Absolute Value & the Opposite of a Number
Concept demonstration video [8:26] explains how to find the opposite and the absolute value of a given number. A number line is used to help show the distance from zero.
Khan Academy
Khan Academy: Arithmetic and Pre Algebra: Adding Negative Numbers
This video shows addition of negative numbers on a number line, using absolute values. Practice problems are included. [5:41]
Khan Academy
Khan Academy: Arithmetic and Pre Algebra: Points on a Number Line
This video shows how to plot fractions, negative numbers, decimals, and fractions on a number line. Practice problems are available. [1:58]
Khan Academy
Khan Academy: Arithmetic and Pre Algebra: Ordering Negative Numbers
This video shows ordering of negative numbers by relating them to their positions on a number line. Practice problems are available. [2:47]
Khan Academy
Khan Academy: Arithmetic and Pre Algebra: Adding, Subtracting Negative Numbers
This video teaches addition and subtraction of negative numbers using a number line. Practice problems are available. [9:16]
Khan Academy
Khan Academy: Arithmetic and Pre Algebra: Adding Decimals of Different Signs
This video shows how to add positive and negative money amounts in the context of a word problem using a number line. Practice problems are available. [3:15]
Khan Academy
Khan Academy: Algebra: Complex Numbers: Number Sets 2
Video explains in which number sets in the real number system that a specific repeating decimal belongs. Shows method for rewriting the repeating decimal as a fraction. [6:52]
Khan Academy
Khan Academy: Algebra: Absolute Value and Number Lines
A review of what an absolute value is and a step-by-step demonstration on how to plot absolute values on a number line. Practice problems available. [5:39]
Khan Academy
Khan Academy: Arithmetic and Pre Algebra: Negative Numbers Introduction
This video shows how to think about and represent negative numbers using a number line. Practice problems are available. [9:36]
Khan Academy
Khan Academy: Algebra: Absolute Value 1
A step-by-step demonstration on how to list absolute value quantities from smallest to largest on a number line. Practice problems available. [3:22]
Khan Academy
Khan Academy: Algebra: Absolute Value of Integers
A short video explaining that an absolute value of an integer is its distance from zero. Practice problems available. [2:22]
Other
Math Ops: Using Absolute Value to Combine Integers
In this audio lesson students learn how to use absolute value to combine integers. Adobe Flash Player is required.
Virtual Nerd
Virtual Nerd: Rules for Using Absolute Value to Add Integers
Student learn how to add integers while using absolute value while watching a teacher created video. Students learn to add two integers that have the same sign and to add two integers with different signs.
Math Mammoth
Math Mammoth: Add and Subtract Integers Practice: Thinking of Number Line Jumps
Demonstrates how to add and subtract integers using a number line. [5:32]
Khan Academy
Khan Academy: Adding Numbers With Different Signs
Demonstrates with the help of a number line how to add positive and negative 2-digit numbers. [5:32]
Khan Academy
Khan Academy: Adding & Subtracting Negative Numbers
Demonstrates with the help of a number line how to add and subtract 1-digit negative numbers. [4:06]
Khan Academy
Khan Academy: Negative Numbers, Variables, Number Line
Given a, b, and c shown on the number line, Sal determines if statements like -b < c are true. [4:54]