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55 25十25x45的简便算法

=(55+45)*25 =100*25 =2500 望采纳

55x25+25x45 =25x(55+45) =25x100 =2500 答题不容易,望采纳,谢谢!!!

=(55+45)*25=100*25=2500运用乘法分配律.

展开全部55x25-25x45 =(55-45)x25 =10x25 =250

=25*(55-45)=25*10=250

25*(55 45)*40 25*(55 45)*4=100000 10000=110000

55/25+25/45(40+4)= 11/5+25/45*40+25/45*4= 11/5+ 200/9+20/9= 11/5+ 220/9= 99/45+1100/45= 1199/45

①55*25-25*45 =(55-45)*25=10*25=250②44*25=(40+4)*25=40*25+4*25=1000+100=1100③101*37=(100+1)*37=100*37+1*37=3700+37=3737

原式=(55-45)x25+(30-25)=10x25+5=250+5=255供参考.

先算(55+45)再算(40+4)

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