2.5乘4.8乘12.5 用简便方法怎么计算
来源:百度知道 编辑:UC知道 时间:2024/09/24 19:22:13
2.5*4.8*12.5
=12.5*0.8*{2.5*6}
=10*15
=150
2.5*4.8*12.5
=2.5*(0.6*8)*12.5
=2.5*(8*12.5)*0.6
=2.5*100*0.6
=25*6
=150
2.5×4.8
=(2.5×4)×(4.8×4)
=10× 1.2
=12
2.5×4.8
=2.5×(4×1.2)
=2.5×4×1.2
=10×1.2
=12
2.5×4.8
=2.5×(4+0.8)
=2.5×4+2.5*0.8
=10+2
=12
2.×4.8
=2.5×(5-0.2)
=2.5×5-2.5×0.2
=12.5-0.5
=12 顶一下
2.5*4.8*12.5=
2.5*(5-0.2)*(12+0.5)=
(2.5*5-2.5*0.2)*(12+0.5)=
(12.5-0.5)*(12+0.5)=
12*12+12*0.5=
144+6=150