第2课时练习课100以内的加法和减法（一）6 5030703080509010一巩固练习 700503977401090一巩固练习 40343403070880220一巩固练习 （1）50+30=80（元）一巩固练习（2）100-50-30=20（元）（3）买一件上衣和一件裙子需要多少钱？50+40=90（元） 一巩固练习 一巩固练习 一巩固练习 一巩固练习 更多教学资源内容，敬请关注3334326094@qq.comwww.youyi100.comyouyicongshu100WWW.youyi100.comwww.youyi100.comwww.youyi100.comwww.youyi100.comwww.youyi100.comwww.youyi100.comwww.youyi100.comwww.youyi100.comwww.youyi100.comwww.youyi100.com www.youyi100.comwww.youyi100.comwww.youyi100.comwww.youyi100.comwww.youyi100.comwww.youyi100.comwww.youyi100.comwww.youyi100.comwww.youyi100.com