Abstract
The purpose of arithmetic teaching is to master the lesson unit by most students. But it is a problem that there are personal differences in individual calculating ability. Exactly it is a difference in the result of calculation study print exercise and it is due to the weak point of each student. The major weak points are lack of sufficient proficiency of particular digits and style of arithmetic. Therefore to concentrate on these particular weak points repeatedly and master calculation of them. This will make student's confidence for these arithmetic studies. The system automatically produces a print which finds student's weak points first. And the system produces the next print which improves their weak points. Then teacher can make the students master the lesson unit with the support of the system.
