0.3x2.5x0.4的简便方法

余田敬4714简便:0.3x2.5x0.4 -
柏狡肤18787793068 ______ 0.3x(2.5x0.4) =0.3x1 =0.3

余田敬47140.3+2.5x0.4简便方法怎么做 -
柏狡肤18787793068 ______ 原式=0.3+1=1.3

余田敬47140.3*2.5*0.4怎么*简便运算? -
柏狡肤18787793068 ______ 0.3x2.5x0.4; =3x25x4x0.001; =3x100x0.001; =300x0.001; =0.3

余田敬47140.3乘2.5乘0.4怎么算
柏狡肤18787793068 ______ 0.3x2.5x0.4 =0.3x1 =0.3

余田敬471456x1.25、0.3x2.5x0.4的简便运算 1.5x1o5的简便运算 -
柏狡肤18787793068 ______ 56*1.25 =7*8*1.25 =7*(8*1.25) =7*10 =70 0.3*2.5*0.4 =0.3*(2.5*0.4) =0.3*1 =0.3 1.5*105 =1.5*(100+5) =1.5*100+1.5*5 =150+7.5 =157.5

余田敬47140.3*2.5*0.4 脱式计算 -
柏狡肤18787793068 ______ 0.3*2.5*0.4 =0.3*(2.5*0.4 ) =0.3*0.1 =0.03

余田敬47142.5x45x0.4用脱式计算 -
柏狡肤18787793068 ______ 2.5x45x0.4 =2.5x0.4x45 =1x45 =45

余田敬47141.44/0.3/0.4简便运算 -
柏狡肤18787793068 ______ 1.44/0.3/0.4简便运算1.44/0.3/0.4=1.44÷(0.3*0.4)=1.44÷0.12=12

余田敬47140.3x0.4x2.5这到题怎样算 -
柏狡肤18787793068 ______ 0.3x0.4x2.5=0.3x1=0.3

余田敬47140.3X2.5x0.4乘法结合律
柏狡肤18787793068 ______ =0.3*﹙0.4*2.5﹚=0.3*1=0.3