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how to do math in head. This is a free service and does not cost you a penny. Let me tell you if you do not do this any trick you can possibly learn to do mental math will really be useless.
Getting rid of the calculator doing math without a calculator doing math in your head practice doing math in your head. Try to multiply these two numbers in your head. Its time to show off your skills.
This method shows how to simplify this process by making all the.
I loved studying math in school but I must say that if math were this fun and exciting I would have have become a mathematician. You would be amazed by the results. 30 is 10 10 and 10. The key is to simplify before you start.