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This worksheet is about adding and subtracting more complex fractions.

 

Example

 

First find the lowest common multiple of 24 and 15.


24 48 96 120 ...
15 30 45 60 75 90 105 120 ...

 

It is 120

120 = 5 x 24 and 8 x 15

 

19  -  8  =  19 x 5 - 8 x 8  =  95 - 64  =  31
24 15 120 120 120


 

 

10 questions