Wednesday, October 13, 2010

Models of Multiplication

In class we learned that there was Three Models of Multiplication. You hve Rectangular Array, Tree Diagram, Partial Products. All three of these ways are very useful and easy to understand; here are some examples of each to give you an understanding of all of them.

Rectangular Array 4x6



Tree Diagram


23x57
rewrite it like this to make it easier to visualizes it
23
                                                                             x 57
now you write each number out thats in different place values
20 + 3
50 +7
now you can use cross multiplication
7 x 3=         21
20 x 7=     140
50 x 3=     150
20 x 50= 1000
now add all your end solutions
1311
and that is your Partial Products.

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