一、计算：50% 60% 1 5 8565726743973225% 50%859510365317492136590% 12.5% 48% 25% 80% 9585213121 3.5 62.5% 625%8913212516%5.372 2.437.5% 317%5.123二、解方程：125%X25%X28 x40%X98 25%X2.860%X2540 125%X x: =60%433280%X1240 1 X :x=62.5%36543三递等式计算(30+20%)2 123(25+20%) 178-1612.5%63(17) 30% (4860%) (0.75+0.2) 0.2525%4110.9-(6.6+ 12.5%) 4+6025%+0.2537.58125
