数学【人教版】六年级下比例尺练习2(p3)课件哈语解析.ppt
文本预览下载声明
???? ???????? ?????????8????????6???? .????????1:200????? ???? ???????? ???????? ????????. 7cm 5cm ????????? ???? ????? ????????1:20????? ???????????? ????????? ??????? ???????? ????? ???????? ??????????? ???? ?????? ???? ????????? ???????? ???????????? : (1)????? ?????????? ????????????? ????? ???????????? ????????? ????? ??? ?????????? ?????10????????? ??????? ????? ??? ?????????? ??? ????????? ????????? ?????? ??????? ??? ????????? ?????1050???????????? ???????? ????? ????????? ???????? (2) (3) ????????? ????? ???????? ????????????? ??????? ????????? ???????? ????????? ??????? ??? ??? ????????? ?????????? ????????1:20? ????????? ??????? ??? ?????? ????????1:4? ????????? ??? ??? ??? ????????? ?????? ????????1:20? ????????? ???????? ??? ??? ????????? ???????????? ????????1:20? ????????? ?????? ??? ??? ????????? ????????? ????????1:400 ???????4:1?????? (????????? ?????? ??? ???????? ?????????4????????????????? ???????? ??? ????????? ???????? 4 ??? ???????????? ?????? ( 5:200 B. C.1:4000cm 1:10 B. 10:1 C. 1:1 D. 1 0 23km A. 1:23 B. 1:2300000 C. 1:2300000km B C B ????????? ??????5 ????????????????? ?????? 200 ?????? .1 ????????????? ???????? ???????? ?????? ( ) ???????? 4 ???????????? ???? ????????????????? ????????40 ????? ????? ??? ???????? ???????? ?????? ( ) ( ) .3 .2 ??????? ????????? ????? ?????????? ??????????? ?????? ( ) ( ) ( ) ??????? ?????? ???????? ???????? ???????? ??????20 ????????? ?????? ?????? 40 ???? ???????? ????????????? ???????? ???????? 1:2 ?????? (1 ????? ????????? ???? ?????????? ???? ?????????? ???????? 1:1 ?????????? ???? ????????? ??? ???????? ???????? ??? ?????????? ???????? ????? ?????? ?????????? (2 ???? ???????? ????????6:1???? ???????? ??? ????????? ???????? ????????? ??????????? ????? ?????? ?????????? ??????? (3 ?????????? ????????? (2) ????? ??
显示全部