Everyday Math - Double Digits

Suitable for children aged 5 to 10. A total of 8, 000 homework assignments and exercises, study the addition and subtraction of 100, and the multiplication division within 100. It can be used as a lesson in homework after class. 【contact us】 Feedback: [email protected] Panda education, dedicated to providing the best Internet education software for children between 4 and 12 years old!