Everyday Math

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Not Right For WatchKnowLearn
Ages: 8 - 12
6485 Views:
Addition Properties- Commutative, Zero and Associative Properties
From eduplace.com, produced by Houghton Mifflin
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... [more]
May 20, 2010 at 03:58 PM
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Not Right For WatchKnowLearn
Ages: 7 - 16
2920 Views:
How to Borrow in Subtraction Problems
From YouTube, produced by Tom Leher
Tom Lehrer preforms a song on what he calls "New Math" on how to borrow in subtraction problems. (01:35)
Found by rfuqua in Everyday Math
November 22, 2010 at 08:09 PM
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