[Home][General][Business][Engineering][VCE][Learning Units][Tool Box][Glossary]


Adding fractions is done differently than the usual numbers. Normally, while adding or subtracting fractions you will find two types of problems:
As you know, fractions represent
parts of the whole. So, when these parts are from the whole broken into same number of
parts it is easy to add them. For Type 2 problems where the denominator is different, we can not add these fractions by simply adding the numerators. In order to solve these problems first we will need to make into fractions with the same denominator. See how this is done in examples below. 
Example 1

Comments: To solve this problem, first we will need to look at the denominators 3 and 5 and see what multiples of these numbers are common. Multiples of 3 are: Multiples of 5 are: so, in multiples of 3 and 5 the least common multiple is 15. 
Example 2 Solve:
Changing both fractions to a common denominator (see comments on the right)
Comments: Again, we need to look at the denominators first and see what multiples of them are common:
Multiples of 12:
12 24 36Multiples of 2:
2 4 6 8 10 12 14So, we find that 12 is the least common multiple.


[Home][General][Business][Engineering][VCE][Learning Units][Tool Box][Glossary]