Tips to solve numerical
1. Always read statement twice to ensure right data given in question.
2. Write data given in question .
3. Check units of given data, sign conventios and change the units if required.
eg. If data is given in cgs units then convert it to SI units.
4. Cross check formula used in numerical.
5. Do calculation carefully.
6. Checks units in which anwer has been asked.
7. Write units along with numeric value.
Practice numericals to do numerical faster. Dont be in hurry while doing numericals.