Fractions Of Whole Numbers Worksheet

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18
Fractions of Whole Numbers
Consider the following problem: Suppose that a class of twenty students took
a math test and only 5 students made a passing grade. To describe such a
situation one will say that one fourth of the class passed and three-fourth
failed. The class is considered as a unit. We ”break” this unit into four
groups each consisting of five students. One of the group consists of those
students who passed the test and the other three consist of those students
who failed the test. Considerations like these lead to the introduction of
fractions.
The word fraction comes from the Latin word fractius which means ”to
break”. When an object is divided into an equal number of parts then each
part is called a fraction.
There are different ways of writing a fraction. For example, two fifths of an
object can be written as
2
a common fraction:
5
a decimal 0.4
a percentage 40%
We will learn about percentages and decimals later.
a
Now, let us have a closer look at the common fraction:
.
b
The number a is called the numerator and represents the number of parts
in consideration.
The number b is called the denominator and represents how many equal
parts in the unit. Keep in mind that this number can never be zero since
division by zero is undefined.
Example 18.1
Show that any whole number is a fraction.
Solution.
a
If a is a whole number then we can write a as the fraction
.
1
Different Types of Fractions
There are 3 different types of fractions:
Proper Fractions
Proper fractions have the numerator part smaller than the denominator part,
1

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