Especially recommended for kids who want to exercise fractions,
For example, elementary school students, primary school students, basic education students, standard school students, and so on.
Because there are questions with various difficulty levels,
it can be useful for those who have just learned at school and has be studying for some examinations.
Useful to review "fractions" and for brain training, too.
(teenagers studying, graduates, salarymen, businessmen, mothers with children, etc. are also welcome.)
Illustrations will appear under "Question area" and "Answer area".
The illustration changes from time to time.
Tapping round arrow at the top left, you can skip so difficult problem.