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Welcome to my math blog! The purpose of this blog is to help you stay informed about our learning and experiences that have taken place during our math class. I have also included links your child (and you) may want to use in order to supplement math learning in 5th grade.

Tuesday, December 9, 2014

Multiplication of Decimals using the Distributive Property

Once again we looked at multiplication of decimals in a different way.  Today we focused on the Distributive Property of Multiplication.  Basically, you are distributing the decimal number by writing it in expanded form.  Then, you use this expanded notation to multiply each piece by the whole number.  Confused?.... it may help to watch the video I made while we took our notes.  Please watch:  Distributive Property to see how we solved the following:

As part of their assignment, I asked that the students solve four of the multiplication problems using the Distributive Property.  The remainder of the problems they may use the standard algorithm.

This strategy for solving multiplication problems will become very helpful as they move into algebra and are solving for the variable.  See coolmath.com for an example!

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