MATH: TRICKS OF THE TRADE


In Math, it is appropriate to use as many methods to arrive to a solution. There are some techniques that can be utilized to speed up problems resolution. With calculators everywhere some methods have become arcaic, obsolete, or they are not frequently used.

This Section will try to present different math cases with a particular solving method. It is up to the user to verify each solution.

Here below find some Problems or Section from which you can choose:

  • SQUARE of any NUMBER that ends with 5.
  • DIVISION BY 5.
  • MULTIPLICATION BY 5.
  • MULTIPLICATION BY 25
  • DIVISION BY 25
  • A BILLION IS A MILLION OF A MILLION (In other countries)


  • If you have any suggestions, comments, please e-mail me at caesar@ProfessorV.com Otherwise, come back soon.