(2.25*2.7*5.1)/(8.1*0.25*1.7) 简便计算
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(2.25*2.7*5.1)/(8.1*0.25*1.7) 简便计算
![(2.25*2.7*5.1)/(8.1*0.25*1.7) 简便计算](/uploads/image/z/2538139-67-9.jpg?t=%EF%BC%882.25%2A2.7%2A5.1%EF%BC%89%2F%EF%BC%888.1%2A0.25%2A1.7%EF%BC%89+%E7%AE%80%E4%BE%BF%E8%AE%A1%E7%AE%97)
(2.25*2.7*5.1)/(8.1*0.25*1.7)
=(2.25/0.25)*(2.7/8.1)*(5.1/1.7)
=9*(1/3)*3
=9*1
=9
再问: 八分之五加二分之一的和除以三分之七减十分之九 简便计算
再答: 1、(5/8 + 1/2 )/(7/3 - 9/10) 2、(5/8 + 1/2 )/(7/3) - 9/10 是1,还是2?
再问: 是2
再答: 好像没有太简便的方法吧 (5/8 + 1/2 )/(7/3) - 9/10 =(1/8 + 4/8+ 1/2 )/(7/3) - 9/10 =(1/8 + 1 )/(7/3) - 9/10 =3/56 + 3/7 - 9/10 =27/56 -9/10 =270/560 - 504/560 =117/280
=(2.25/0.25)*(2.7/8.1)*(5.1/1.7)
=9*(1/3)*3
=9*1
=9
再问: 八分之五加二分之一的和除以三分之七减十分之九 简便计算
再答: 1、(5/8 + 1/2 )/(7/3 - 9/10) 2、(5/8 + 1/2 )/(7/3) - 9/10 是1,还是2?
再问: 是2
再答: 好像没有太简便的方法吧 (5/8 + 1/2 )/(7/3) - 9/10 =(1/8 + 4/8+ 1/2 )/(7/3) - 9/10 =(1/8 + 1 )/(7/3) - 9/10 =3/56 + 3/7 - 9/10 =27/56 -9/10 =270/560 - 504/560 =117/280