88くんマスター　そろばん教室88くん is the official app of the "Soroban 88-kun" abacus classroom that children can attend from a young age. It allows children who attend the "Soroban 88-kun Classroom" by Seiha Group to practice flash mental arithmetic and calculation exercises at home!

Key Features:

• Flash Practice

Practice flash mental arithmetic starting from simple problems.

• Multiplication Master

Practice multiplication calculations.

Exclusive Features for Soroban Classroom 88-kun App Members:

• Mastering 5 and 10

Practice elements related to becoming familiar with numbers, including carry-over and carry-down.

• 25-cell Calculation Master

Practice addition, subtraction, multiplication, and division using the 25-cell calculation method.

• Place Value Knock

Practice predicting the number of digits in the results of multiplication and division calculations.

• Quotient Master

Practice calculating the maximum digit of the quotient in division.

• Flash Mental Arithmetic with Everyone

Perform flash mental arithmetic by specifying the number of digits, number of digits to be spoken, and time.

• Number Challenge

Practice getting familiar with numbers, specifically designed for young children.

Please note that the app may temporarily be unavailable due to system maintenance or network issues. We apologize for any inconvenience caused and kindly request you to try logging in again after some time.