This app has cheerful music, and has a pet to accompany the kids, It will give the right or wrong tips. You can choose less than 10 or less than 100. Especially for kids preschool early childhood mathematics.
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Basic Adding and Subtracting for Kids - The Yellow Duck Early Learning Series 1.2.0 Update
Language:English - Czech - Dutch - French - German - Italian - Japanese - Korean - Polish - Portuguese - Russian - Simplified Chinese - Spanish - Swedish - Traditional Chinese - Turkish -