Question

简算；3又5/3*25又5/2+37.9*6又5/2

Answer 1

3.6*25.4+37.9*6.4
=(10-6.4)*25.4+37.9*6.4
=254+(37.9-25.4)*6.4
=254+12.5*6.4
=254+12.5*8*0.8
=254+100*0.8
=254+80
=334

Answer 2

3又5/3*25又5/2+37.9*6又5/2
=3又10/6*25又10/4+37又10/9*6又10/4
=3又5/3*25又5/2+﹙25又5/2+12又2/1﹚*6又5/2
=3又5/3*25又5/2*6又5/2+2/5*5/16
=25又5/2*﹙3又5/3*6又5/2﹚+80
=25又5/2*10+80
=127*2+80
=334

Answer 3

3又5分之3乘以25又5分之2+37.9乘以6又5分之2
=91又25分之11+242.56
=334

Answer 4

3又5分之3乘以25又5分之2+37.9乘以6又5分之2
=91又25分之11+242.56
=334

Answer 5

3又5/3*25又5/2+37.9*6又5/2
=3.6*25.4+37.9*6.4
=3.6*25+3.6*0.4+37.5*6.4+0.4*6.4
=0.9*4*25+37.5*8*0.8+0.4*（3.6+6.4）
=90+240+4
=334