Perform arithmetic operations by adding, subtracting, or multiplying adjacent numbers and entering the last digit of the result. Complete 15-minute sessions with 5-minute breaks, followed by a 15-minute session.
by Takahide Kambe★ 4.819 ratingsEducationFreeData updated 2026-09-06
Learn techniques for double-digit numbers using step-by-step methods. Perform calculations with visual breakdowns. Practice exercises to improve speed and accuracy. Track progress and review solutions for each problem.
The app offers two educational activities for preschool children to learn basic knowledge. Children can discover numbers with animations, recognize and name numbers, and test their reflexes with adjustable difficulty levels.
