The National 4 Mathematics Course enables learners to select and apply straightforward mathematical skills in a variety of mathematical and real-life situations.
Below are websites that can be used as a valuable resource to support your studies towards National 4 Maths.
SQA
http://www.sqa.org.uk/sqa/45751.html
National 4 Maths Resources
https://www.national5maths.co.uk/free-national-4-maths/
BBC Bitesize
http://www.bbc.co.uk/education/subjects/zyc76sg
Maths is Fun
Maths Workout