Seller: liu xing, Nanjing, JS, China
paperback. Condition: New. Language:Chinese.Paperback.Pub Date:2021-04-01 Publisher:Gansu Children's Publishing House The Preschool Mathematical Ability Training is a set of mathematics reference books specially prepared for children aged 3 to 6. It consists of four sub-volumes: Addition and subtraction within 10. addition and subtraction within 20 (no carry. no abdication). addition and subtraction within 20 (carry. abdication). addition and subtraction within 100. The content arrangement refers to the lower grade mat. Seller Inventory # NX008850