www.dbpj.net > 简便计算:53.9×23.6 40.5

简便计算:53.9×23.6 40.5

简便计算:53.9*23.6+40.553.9*23.6+40.5=1272.04+40.5=1312.54直接计算,不能简便.

简便计算过程方法如下解:53.9x23.6+40.5x23.6+23.6x5.6=(53.9+40.5+5.6)*23.6=100*23.6=2360

7.8*53.9+5.39*22=7.8*53.9+53.9*2.2=53.9*(7.8+2.2)=53.9*10=539

44*2+44*22+44*44=44*(2+22+44)=44*68=2992

23.6*0.99 解:=23.6x(1-0.01)=23.6x1-23.6x0.01=23.6-0.236=23.364 祝学习进步.

23.5出现次数最多,是众数 中间两个数是23.8和23.5,中位数是(23.8+23.5)/2=23.65

23.6-9.58-3.6=23.6-3.6-9.58=20-9.58=20-10+0.42=10+0.42=10.42

解:40.5*101-40.5=40.5X(101-1)=40.5X100=4050

原式=4.56*(236+164)=4.56*400=1824直接提取公因数

0.56*40.5+0.44*59.5 =0.56*(40+0.5)+0.44*(60-0.5) =22.4+0.28+60.44-0.22 =48.86

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