,练 习 七,20+30 100-60 40-10 30-0 0+40 70-20 90-40 30+10 20+30 50-10 40+30 70-30 10+30 60-40,得数是40的路才是回家的路,星星蹦蹦跳,517 = 3048 = 386 = 227 = 5049 = 237 = 465 = 886 =,29,51,44,30,78,99,94,58,47,50,69,72,96,62,34,39,65,摘星星,接龙游戏,12,21,41,45,53,83,23+7,58+7,40+50,胜利,29+9,30+18,46+8,75+5,82-80,（）+28=35,（ ）-40=5,51+20,入口,23+8=,16+5=,6+29=,35+7=,26+6=,31,21,35,42,32,你,们,真,聪,明,30,猜一猜,小动物后面都藏着什么数？,45 + = 75,56 - = 50,- 20 = 28,6,48,26+8,45+8,4+36,9+36,73+8,40,45,81,34,53,配对连线,一共有多少只兔？,25+8=33（只）,46元,35元,我带了80元钱，想买这两个玩具，钱够吗？,35+46=？,23人,6人,赛跑和跳高的学生一共有多少人？,23,6,29,（人）,（1）买这两样东西一共要花多少钱？,比篮球便宜20元,（1）一个钟表多少钱？ （2）买这两件物品一共需要多少钱？,32,95,42+9=,42+30=,7+27=,50+21=,51,72,7+27=,50+21=,34,71,