If Maths is not your strong skills and you need to work on your skills, then you have to make an attempt in understanding the concepts. Then only you can excel in the subject and scrolling through study material for class 6 CBSE Maths is a right step in that direction. On this route there are a few steps that could make your task easier.
Seek out for help
Once in class you can ask clarification for a particular subject. If the answer to this question is not as per your levels of satisfaction then you can seek out opinions of your teacher after the class. There could be suggestions on a one on one basis that would not be aligning with the regular class timings.
Be aware of exactly what the words mean
Maths is not merely addition or subtraction as it involves a collection of several operations. Before you are going to grab a concept you need to fully understand about the operations. In addition you need to practice examples of the concept with a host of definitions to look up to.
Pay due consideration in understanding about the rules
Formulas, equations are all tools of Maths and the art of the subject is going to be easy once you become aware of the concepts. You have to rely on them just like a carpenter relies on their hammer, chisel to script the work of art. Once you pay attention of practicing 6th Maths study material makes the task considerably easy.
Be part of class activities
If you are not aware of the answer to a question you need to seek clarification. Clearly explain what you do not understand so that the teacher can pay attention to which are the grey areas to address. A lot of students are afraid to ask questions as this would really turn them off. Merely by staring at a question you are not going to find an answer to the problem. If you do not want to ask your teacher you can ask your friend or even a relative.
A sensible decision would be to seek outside help if the teacher is not there to address your concerns. In the same manner as there are various learning styles so too there are various teaching styles. If there is a visual teacher and he might be the best teacher in the world, but still you might find it difficult to be learning from them. Having some degree of help from others could help your cause to a considerable extent.
Put down the solution in writing
For example when you are solving equations write down the answers in a series of steps. The reason being once you write down the solutions it keeps a track on what you are going to do. Once you write down the steps it helps you to figure out where you might have gone wrong. This might even go on to reinforce and strengthen on what you have studies.