This unit introduces the concept of rational numbers
based on the concept of fractions of whole numbers. In the first section we explain the concepts of fractions
and equivalent fractions as well as how to find a common denominator
in order to compare fractions.
In the second section we look at how to add, subtract,
multiply and divide fractions.
In the third section we look at other ways of representing
fractions as decimals and focus on the concept of rational numbers. The
final part of the unit gives examples of how to apply fractions and
percentages to everyday situations.
