Associative Property
addition
(7+2)+5=7+(2+5)
 9   +5=7+    7
14 =14
or
multiplication
(7x2) x5= 7x(2x5)
14    x5= 7x   10
70=70
When we are adding or multiplying more than two numbers the grouping does not affect the sum or product

You can change the grouping of the factors and get the same product using the associative property.

Links

http://www.youtube.com/watch?v=3cdT-e-y7lM

http://www.loisterms.com/lois10.htm


http://www.lexington1.net/technology/instruct/ppts/mathppts/Numeracy%20&%20Concepts/Associative%20Property.ppt.

https://secure.brainpop.com/math/numbersandoperations/associativeproperty/preview.weml


http://www.harcourtschool.com/glossary/math_advantage/definitions/associative_add7.html


http://www.harcourtschool.com/glossary/math_advantage/definitions/associative_mul7.html

http://www.youtube.com/watch?v=tboUQp2tAxw

Game

http://www.aaamath.com/g8_74ax1.htm


Work sheets
http://www.superteacherworksheets.com/addition.html