Isbn: 9787544555098 - 鸟儿鸟儿飞进来 乘法的认识 王镇坤 著 陈燕虹 编 (1 risultati)

paperback. Condizione: New. Paperback. Pub Date: 2019-01-01 Pages: 39 Language: Chinese Publisher: Changchun Press Birds and Birds Fly In (Upgrade Version) tells young readers: When calculating a number for multiple additions. use Multiplication calculation will be more convenient and faster.?Before learning multiplication. you must be familiar with the concept of double. For example. if a group has 5 objects. then 3 groups add up to 15.?Add 5 3 times. which is 3 times 5. that is. 53=15.?In this process. children not on.…