(56×57×34)÷(38×21×17) 请你巧算
问题描述:
(56×57×34)÷(38×21×17) 请你巧算
答
(56*57*34)/(38*21*17)=(56/21)(57/38)(34/17)=(8/3)(3/2)(2/1)=8
答
=(56*57*2)/(38*21)=(56*57)/(19*21)=(56*3)/21=56/7=8
答
(56x57x34)/(2x19x3X7x17)=(56x57x34)/(56x57x34)=8
答
先约分,56/21=8/3,57/38=3/2,34/17=2,式子变成(8×3×2)/(3×2),再把3×2约掉,等于8
答
答:(56×57×34)÷(38×21×17)
=7x8x3x19x2x17/(2x19x3x7x17)
=8.
答
(56×57×34)÷(38×21×17)=(7×8×19×3×17×2)÷(19×2×3×7×17)=8