Numb and Number|教育線上App不用買

Simply the easiest way to improve your mental arithmetic and burn out your brain at the same time. What more can I say?

There are no bells and whistles here: no cuddly bears, no cute characters, no songs and no chirpy birds. Just numbers, numbers and numbers ... and a few plus, minus, multiplication and division signs to break them up a bit.

So why should I install this? If you want to stretch your mental muscles, then there's your reason. Improvement in your mental arithmetic is guaranteed. Just kidding. Of course it's not guaranteed. Wouldn't have thought it could harm it though.

There are 6 challenges to exercise your synapses: Maths, Tables, Memory, Reverse, Blindfold, Memory+1 and Memory-5.

Simple.

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