急性病毒感染的问题

150-25-25000-8-125青岛版四年级数学下册第三单元运算律练习题25X42X468X125X84X39X254X25+16X254X25X16X2536X99（25+15）X4（25X15）X449x49+49x5149x99+49（68+32）X55X289X268+32X5（125X25）X4（125+17）X825X64X12585X82+82X1525X97+25X364X15－14X15125X8888X10287X99+8779X25+2576X101－76378+527+73167+289+3358+39+42+6136X45+36X56－3666x93+93X33+9399X3246X253666X93+93X33+9388X10226＋47＋174815＋49＋65＋14＋X45+36X56－3697＋89＋11125X8885＋47＋15＋531172X12518＋77＋40＋23＋4871＋73＋69＋74＋68＋70＋69123X64＋123X3639X4X5125X6X825X2432X305103X1578X24－24X6849X49+49（40+6）X25（68+32）X568+32X549X99+4936X97—58X36+61X363000-25-472099X23+2356X7+45X7-7900—178—122125X72X4728X79十272X79（20+4）X2599X111546一（546+239）（20+4）X259X37+9X635X289X235X37+65X37124X25-25X2485X82+82X1532X（200+3）38X29+38（125X25）X475X299+75(4+8）X12525X（20+4）45X7+55X78X27+8X73103X32329X1019X37+9X6399X2336X97—58X36+61X36（125+17）X8102X888X13+8X75000-8-125165+204+335+9656X7+45X7—73000-25-4720-15-6150-25-2