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Thursday, September 12, 2013

GoMath Chapter 2

During the next few weeks, our math class will be learning about multiplying by 1-digit whole numbers.  We will investigate strategies for multiplying 2-, 3-, and 4- digit numbers by the numbers 2-9.

Important Chapter Vocabulary
1.  Distributive Property;  The property that states that multiplying a sum by a number is the same as multiplying each addend by the number and then adding the products.
2.  Partial Products;  A method of multiplying in which the ones, tens, hundreds, and so on are multiplied separately and then the products are added together.

            Partial Products

Multiplying by tens, hundreds, thousands

7 x 4 = 28
7 x 40 = 280
7 x 400 = 2800
7 x 4000 = 28,000