i need help with numerical expressions

If your question is not specific, we can recommend you do some reading at some links, such as:

http://www.icoachmath.com/sitemap/Numerical_Expression.html

On the other hand, if you are more specific with the difficulty, or a problem you cannot solve, we can give more specific help.

Of course! I'd be happy to help you with numerical expressions. Numerical expressions involve combining numbers and mathematical operations to get a specific numerical value. What specific aspect of numerical expressions do you need assistance with?