347x69十653x31十306x19简便计算
小学数学题 解答要详细 -
347X69+653X31+306X19 =347×50+347×19+306×19+653×31 =347×50+(347+306)×19+653×31 =347×50+653×19+653×31 =347×50+653×(19+31)347×50+653×50 =(347+653)×50 =1000×50 =50000 1.12X67.875+125X6.7875+1250X0.053375 【题目有问题】1.25x67.875有帮助请点赞。
347X69+653X31+306X19 =347×50+347×19+306×19+653×31 =347×50+(347+306)×19+653×31 =347×50+653×19+653×31 =347×50+653×(19+31)347×50+653×50 =(347+653)×50 =1000×50 =50000 1.12X67.875+125X6.7875+1250X0.053375 【题目有问题】1.25x67.875有帮助请点赞。