The best approach to study Cost and Management Accounting is,

• Read the question properly; many students would have understood the concepts correctly but may not have answered in the way ICAI expects you to write the answer 
• Conceptual knowledge is a must because adjustments in a question can be different from that of study material issued by ICAI .You may make not of all the numerical data given at the beginning of your solution while reading the question. Examiners play with English in this paper; it is important to understand the question correctly. Present all the steps in form of working notes. Also, give appropriate references to the main answer 
  Do not skip any chapter 
• Make note of difficult adjustments that you find while practicing either in separate book or just in the corner of page where the problem is found. This exercise will help in saving time while revising