Use an with customizable size, position, and color settings. Perform calculations up to 15 digits. Challenge addition, subtraction, multiplication, and division problems. Adjust bead sounds and screen orientation for horizontal use.
by Hirokazu Komatsu★ 4.560 ratingsEducationFreeData updated 2026-09-28
Learn numbers by matching counts to on-screen . Play interactive games for basic addition. Explore animated characters and unique number visuals. Track progress through guided lessons and challenges.
Learn arithmetic by matching answers to problems. Configure quizzes with 12, 20, or 30 questions. Problems are randomized and generated by the device. Track progress through repeated practice. Adjust difficulty based on skill level.
Perform calculations using basic and complex modes. Handle complex numbers with functions like square roots and exponents. Convert units between different systems. Store and recall previous results.
Teach basic operations with interactive exercises. Track progress over time. Earn rewards for completing tasks. Provide instant feedback on answers. Include a safe, child-friendly learning environment.
The app allows elementary school children to practice addition, subtraction, multiplication, and division of big numbers. Children can customize problem sets and choose timed options for practice.