How do you multiply decimals?
These sites explain multiplying decimals.
http://www.math.com/school/subject1/lessons/S1U1L5GL.html
http://www.coolmath.com/decimals/08-decimals-multiplying.html
http://www.math.com/school/subject1/lessons/S1U1L5GL.html
http://www.coolmath.com/decimals/08-decimals-multiplying.html