hello aspirant,

You can prepare for your CDS exam for Elementary mathematics by following these below mentioned preparation tips :

1. Practice your Speed and accuracy for the exam .
2. Make a list of important formulas and theorems from the topics.
3. Make a note of important topics from the CDS syllabus by analysing the previous years' question papers.
4. Time Management is another key factor in performing good marks in the exam.

Further, to know more about the Preparation tips and strategies for the CDS Mathematics Preparation, you can follow the below mentioned link to know more : https://competition.careers360.com/articles/how-to-prepare-for-cds

I hope that this will help.