KoAbacus - Mental Arithmetic
- Korean Abacus & Mental Arithmetic
The abacus is a calculating tool that was in use centuries before the adoption of the written modern numeral system and is still widely used by merchants, traders and clerks in Asia, Africa, and elsewhere.
* button function6,5,4,3,2,1 :
- positional number + ,
- , x , / : the four arithmetical operation & new number genernation9, 8, 7, 6, 5 : boundsstat & end : result
* Menu Button
- Auto Test : Count, Delay
- Speech : Start, End, +, -, *, /
- Sound : Click Sound
* StartButton LongClick
- Abcus Clear
* PlusButton LongClick
- Volume Control (4.0 ~)
Category : Education
Reviews (11)
Good and best 🌷🌷🌷💐💐💐💐💐💐😺😺😺😺
Stupid app
It's a great tool to practice your abacus and mental calculations for those who have learned before ;D
While the lower screen is clear, the upper part is confusing and how to use is unclear at once, needs time to get how it works but not clear. Not good for kids learning this either!
I am studying ucmas is 2 level and some confusion then I take help
Good apps, but i don't know how to use abacus to calculate.
Excellent application but please fix layout issue in nexus 7, the lower half of the lower beads is truncated by the box and not displayed. This issue is not repro in my sony experia U. Also please consider adding more bounds and releasing a payable version without ads.
its good & mentally powered mind use it
I can't learnt maths easily then I join ucmas I practice with this app now it is possible to learn maths ........u also installed this app........bye...byeeeeeeeeeeeeeeeeee......
Ucmas is good for maths
Great for addition. Continuous subtraction srarts from zero, so it's rather useless.