Lesson 4 - Multiplying Decimals

  


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Multiplying decimals look tough, but the process is not to different from multiplying whole numbers.  Let's take this one:

          4.5 x  0.2 7 =

Here's how:

        4.5
x    .27
      315
+   900
    1215

answer:  one and two hundred fifteen thousandths

 

 

 1st   Line up the numbers on the right &
        multiply just as would with whole numbers.
        Remember - do not line up the decimal points
2nd  Add the products.
3rd   Place the decimal point in the answer by
       starting at the right and moving a number
       of places equal to the sum of the decimal
       places in both numbers multiplied.  In this
       case the decimal is moved three places
       over from the right (between the 1 & 2).   

 

  

Decimals

 

Overall practice activities for learning about decimals.

 

  

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