,第1课时 图书馆(1),算一算。优翼,85= 76= 95= 7013= 2560= 3730= 5036= 6630= 574=,13,13,14,83,85,67,86,36,53,284,8412,201232,284,28230,30232,答: 和 共有32本。,3,2,284,借助计数器拨一拨。,12,满十进一。,1,3,7,289,17,满十进一。,1,答: 和 共有37本。,1、圈一圈,算一算。优翼,35540,40343,43,1、圈一圈,算一算。优翼,4711,201131,31,2、用竖式算一算。优翼,587,532,6,5,15,1,65,3,7,37,2、用竖式算一算。优翼,386,827,4,4,14,1,44,35,3,5,15,1,3、森林医生。优翼,3 7,6,3,3,4,376,33,5 4,4,5,0,544,50,3,5 6,8,6,356,86,43,1,8,58,5 9,59,