1、车逻实验小学 孔晓芳,苏教版一年级数学上册,曹甸镇中心小学,第一关,1,( ),8,1,( ),6,1,4,( ),3,7,3,1,( ),5,2,103,105=,106=,107=,第二关,13,15,16,17,第三关,91+8=,913=,914=,916=,18,16,14,13,恭喜恭喜,闯关成功!,一共有几个呀?,数数法:,9,10,11,12,13,9+4,=13,凑十法:,10,为什么从4里面先拿1个放盒子里?先算什么?再算什么?,试一试,先圈出10朵。,9+7=,1,6,16,10,9+6=,9+6=,1,5,10,15,95( ),1,4,10,14,3,12,9,8,1
2、7,凑十法,先圈出10根,再计算。,9+1+1=,9+2=,9+9=,9+1+8=,11,18,18,11,算一算,比一比。,江苏省电化教育馆制作,9+1+1=,9+2=,9+1+8=,9+9=,11,11,18,18,9+,蚂蚁搬家,9+,蚂蚁搬家,9+5=14,9+,蚂蚁搬家,9+2=,9+,蚂蚁搬家,9+,蚂蚁搬家,9+,蚂蚁搬家,9+,蚂蚁搬家,9+,蚂蚁搬家,9+,蚂蚁搬家,9+,蚂蚁搬家,9+,蚂蚁搬家,蚂蚁搬家,9+,蚂蚁搬家,放鞭炮,9+1=,放鞭炮,9+6=,放鞭炮,9+3=,放鞭炮,9+4=,放鞭炮,9+9=,放鞭炮,9+5=,放鞭炮,9+7=,放鞭炮,9+2=,放鞭炮,9+8=,9 + 1 = 109 + 2 = 119 + 3 = 129 + 4 = 139 + 5 = 149 + 6 = 159 + 7 = 169 + 8 = 179 + 9 = 189 + 10 = 19,仔细观察你发现了什么?,谢谢大家!,再见,