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认识几百几十的数,扬州大学附属小学 张 燕,?,4个百,5个十,4个百和5个十合起来是四百五十,4,5,0,370,430,390,400,410,420,一十一十地数,从八百九十数到一千。,890,900,910,920,930,940,950,960,970,980,990,1000,( )( )( )( )( ),380,350,130,( )百和( )个十合起来是( ),3,5,13个十是( ),300,220,750,580,320,320,300,20,200 50 250,50 200 250,250 200 50,250 50 200,700300= 700 30 = 770700 = 77070= 540500 = 700300 = 300600= 30600=,1000,730,70,700,40,400,900,630,40020=420(棵),