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Practicing Metal Math
Regardless of using mental math trick as a party thing or trying to keep you brain sharp and healthy it has always bother me that there was a lack of web site dedicated to practise mental math trick. On this page I present to small webapplications to help you practice these mental tricks.
Calculating the Weekday on any date
First application is for practising week of the day for any date in any centuries. e.g. what is the weekday of Sep 4, 1957?. This application generate some random days based on one or more centuries selected and you can check you answer and keep track on your score.
Day of Week practice
Calculating Cubic root in your head
The second application help you practise mental cube root of a random generated cubic square of a integere number. You can choose between cubic root of 1, 2 or 3 digit numbers.
Practicing Modulo Calculation
The third applicatiion is for practicing mental modulo calculation which is useful for checkking the validity of addition or multiplication of several numbers plus the Casting out 9 math trick.
Casting out 9