練習高速減算

Mental calculation has so many advantages and really brings mathematics to life as well as providing motivation and strengthening and enlivenment to the mind. This is because numbers are mental concepts, they do not exist on paper. Furthermore, this free online app “Mental Maths Brain Training II” can perfectly improve the memory. Memory depreciates if it is not exercised. Short term, medium term and long term memory are all stimulated by playing this app,mental calculation. There are totally 6 levels as followings:-
Level 1: numbers up to 5 , timeout = 10 sec
Level 2: numbers up to 10 , timeout = 15 sec
Level 3: numbers up to 20 , timeout = 20 sec
Level 4: numbers up to 50 , timeout = 20 sec
Level 5: numbers up to 100 , timeout = 25 sec
Level 6: numbers up to 1000 , timeout = 30 sec
Each level, you will earn point (1 point per answer) if you answer the question correctly in time.


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