Basic Mathematics:

All students entering a college or university are given entrance examinations. I worked for one years ago. And 85% of the students tested into the Basic Mathematics course whether they had passed High School Calculus or not. It was because the students failed the fraction, proportions, ratio, percents, and decimals part of the exam. Once testing into that course, they not only are required to pass the course by 85% but they also must take the followup course sequence, PreAlgebra and then Algebra 1.
Taking these courses uses up financial aid money and the student may run out of funding before they have a chance to get a degree. It would be wise to build a solid mathematics foundation before taking the entrance examination. Fractions are useful in every day money transactions, cooking, construction, music, art sewing and many other every day tasks. The following are downloadable free Powerpoints on fractions provided by various teachers.

Base Ten Number System 
A thorough understanding of decimals, and a thorough understanding of our Western money culture, begins with understanding that our number system is a base ten number system. For every "digit" in a number, there is a place value for that number. Let the following "number" be our example: 123,456,789. Every three numbers are separated by a comma. Each of the numbers represents that number times factors of a base 10 except "9". Nine represents 9 ones so that is called the units place value and could be written as 9 x 10^0. Any number raised to the zero power means there are no factors of that base number to multiply and the base equals 1. The raised number is the exponent and represents how many tens you are multiplying together (every zero represents a factor of ten).
Review the following chart: 