四年级100道简便运算脱式计算.docx

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1、2547458X125X8449254X25+16X25425162536X99(25+15)4(2515)44949+49X5149X99+49(68+32)55289268+32X5(12525)4(125+17)82564X1258582+82X152597+25X3378+527+73167+289+3358+39+42+613645+36X56-366693+9333+93993246253645+36X56-366693+93X33+9397+89+1188X102125X8826+47+17485+47+15+53815+49+65+14+11125682524323051031

2、57824-24684949+49(40+6)25(68+32)5683254999+493697-5836+6136300025472015615025250008125992323567+457-7125138726(51+19)(20+4)25991149.6227.1719.621546(546239)(20+4)25937+9635289235X37+653712425-25248582821532(200+3)38X29+38(12525)47529975(125+17)8102X100+1028X12+8X7937+96399233697-5836+6136165+204+335+963000254567+457-772015615025250008125