2026年___月___日 时间: ____时分至____分,共用时____分钟 27×93+33×93 =(27+33)×93 =60×93 =5580 965-(221+665) =965-665-221 =300-221 =79 36+125+75+24 =(36+24)+(125+75) =60+200 =260 89×81+81 =(89+1)×81 =90×81 =7290 933-75-525 =933-(525+75) =933-600 =333 51×25×4 =51×(25×4) =51×100 =5100
