书籍详情
格式
平装书
页数
24
语言
英语
已发布
Oct 1, 2010
出版商
Crabtree Classics
ISBN-10
0778767949
ISBN-13
9780778767947
描述
Betsy helps out at Aunt Essie's Downtown Diner. Supplies, such as straws, are packed in groups of ten. Betsy breaks up tens and make tens as she helps set up and clean up. Read about the restaurant where Betsy learns about regrouping. See how regrouping helps in addition and subtraction.