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Addition Videos

Commutative Property for Addition

Sal from Khan Academy explains the concepts behind the commutative and associative properties of addition. Learn what the terms mean, how to apply them to a problem, and how understanding the ideas can help you solve future problems!  Continue …

Application of Addition of Real Numbers

Sal of Khan Academy explains how to add numbers that are both positive and negative and contain decimals. He uses images to help you understand the concept of adding negative numbers, and by the end of this word problem, you'll be an expert on the topic!  Continue …

Inequalities Using Addition and Subtraction

Sal of Khan Academy explains how to understand inequalities using addition and subtraction. Get some great examples of how to approach and solve inequalities using this technique.  Continue …

More on Unit Vector Notation

Sal from Khan Academy reveals that adding the x and y components of two vectors is equivalent to adding the vectors visually using the head-to-tail method. This followup video offers a second way to approach vector notation.  Continue …

Commutative Law of Addition

Sal from Khan Academy explains the principles behind the commutative law of addition. It has a complicated name, but Sal makes the concept so easy!  Continue …

Addition of Rational Numbers

Sal of Khan Academy offers tons of examples for adding together rational numbers, or fractions. Get practice finding a common denominator and adding together complicated fractions. This great practice will help you feel much more comfortable with adding rational numbers.  Continue …

Associative Law of Addition

The associative law of addition sounds complicated, but this video by Sal of Khan Academy reveals how simple the law actually is in practice. Learn how to associate numbers differently through the use of parentheses and how to rewrite phrases to show that they add up to the same amount.  Continue …

Addition Elimination Method 3

Sal from Khan Academy explains how to solve for x and y when given two different expressions. Learn how to use addition elimination and other methods to solve a difficult problem.  Continue …

Adding Decimals

Sal of Khan Academy explains how simple adding decimals can be. He removes the confusion that surrounds adding decimals by treating them as normal numbers, and with his tips you'll realize how easy the process can be!  Continue …

Addition Elimination Method 2

Sal from Khan Academy offers an alternative method to addition elimination in order to solve for x and y. This example will help make a tricky topic feel easy!  Continue …

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