When evaluating mathematical expressions, be sure to follow the order of operations:
1) G: Groupings. These include parentheses, brackets, and braces.
2) E: Exponents. This includes roots and radicals.
3) M and D: Multiplication or Division. These both have the same "weight" so when you get to this step do whichever operation comes first when working from left to right.
4) A and S: Addition or Subtraction. These both have the same "weight" so when you get to this step do whichever operation comes first when working from left to right.
The main types of numbers are:
What can a math tutor do?  

We can...  We cannot...  
Help you find new ways to approach a problem  Give you solutions for a problem  
Show you how to take and use good notes  Teach you the material from scratch (you must attend class, watch instructional videos, and read your textbook!)  
Provide support and encouragement  Sit with you through every quiz or test  
Work with you on examples to help you understand the steps and concepts  Work with you on examples while you're taking an exam.  
Help you understand and interpret questions  Walk you through stepbystep calculations for quizzes or tests  
Show you how to use your calculator effectively  Tell you if an answer to a quiz or test question is right or wrong before it's submitted 
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