I've always been surprised by the number of students taking high school and college math courses who have forgotten basic concepts they learned in grammar school. Adding and subtracting fractions is a surprising top contender for this prize. Another one is order of operations:



The graphic above is supposed to remind you of the following order to arithmetic calculations:

  • do all calculations within parentheses
  • evaluate all exponential expressions
  • do all multiplications and divisions in order from left to right
  • do all additions and subtractions in order from left to right


When you think you understand PEMDAS, try the following practice example:



When you're ready to check your answer (to three decimal places), look down at the bottom left corner of this page.

There are many places one can get help with basic math. One online tutorial to check out has been developed by the Goodwill Community Foundation.

To fulfill our tutoring mission of online education, our college homework help and online tutoring centers are standing by 24/7, ready to assist college students who need homework help with all aspects of basic math. Our mathematics tutors can help with all your projects, large or small, and we challenge you to find better online basic math tutoring anywhere.


Answer = -0.270

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