Apply properties of operations as strategies to add and subtract. Examples: If 8 + 3 = 11 is known, then 3 + 8 = 11 is also known. (Commutative property of addition.) To add 2 + 6 + 4, the second two numbers can be added to make a ten, so 2 + 6 + 4 = 2 + 10 = 12. (Associative property of addition.)
There are 7 videos in this category and 0 videos in 0 subcategories.
Category Videos

Not Right For WatchKnowLearn
Ages: 8  11
7937 Views:

Addition properties are rules that you can follow when adding numbers. The commutative property, assiciative property, and identity, or zero, property are the rules. They can make adding as simple as singing a song. Learn more about the properties... of addition with this stepbystep, interactive link from StudyJams. A short, selfchecking quiz and song are also included with this link.
[more]
June 18, 2011 at 10:36 PM


Not Right For WatchKnowLearn
Ages: 8  12
7849 Views:

Students will learn to use the properties of addition to make addition easier. The associative property says that addends can be grouped in any order. Changing the order that numbers are added does not change the sum. The sum of zero plus a number..., if that number.
[more]
May 20, 2010 at 03:58 PM


Not Right For WatchKnowLearn
Ages: 5  8
4965 Views:

Students learn to add three onedigit numbers. Numbers can be added in any order. Look for an addition fact that you know, then add.
May 14, 2010 at 01:58 PM


Not Right For WatchKnowLearn
Ages: 8  14
4044 Views:

This video indicates it is for prealgebra, however this would be good for anyone who is reviewing or learning place value. This video has humor, which helps make the lesson fun. Video shows how to use the number line, shows how to use the number lin...e where the problem has more than two addends. Then they show how to add in different order by grouping numbers, knowing which numbers add up to 10 to make it easier. This video gives many examples to reinforce the lesson taught. Video is good quality and good for all students as review or initial learning of the concept. (09:21)
[more]
July 31, 2009 at 08:00 AM


Not Right For WatchKnowLearn
Ages: 5  10
4165 Views:

Begins with a review of addition (in simple terms) with visual support. Number line is also used to demonstrate principles. (08:32)
April 3, 2009 at 01:34 AM


Not Right For WatchKnowLearn
Ages: 7  10
2953 Views:

This video teaches adding a 2digit number to a 1digit number with an introduction to carrying. The narrator of the video walks you through the mathematical computations in ten minutes. (09:48)
July 11, 2009 at 08:11 AM


Not Right For WatchKnowLearn
Ages: 8  14
3784 Views:

The instructor uses humor to demonstrate how to subtract numbers on a number line. The video features a dual screen, and sometimes a threepart screen for demonstration. (06:23)
March 18, 2010 at 08:40 PM
