(20.1减21乘以七分之六)除以七怎么简便计算
(20.1减21乘以七分之六)除以七怎么简便计算
(20.1-21×6/7)÷7
=(20.1-18)÷7
=2.1÷7
=0.3
1.32减32乘以七分之六的简便运算
1.32-32 *6/7
=1+0.32-32 *6/7
=1+32(1/100 -6/7)
=1+32[(7-600)/700]
=1-32*593/700
=1-8*593/175
=(175-8*593)/175
=[175-(10-2)*593]/175
=(175-10*593+2*593)/175
=(175-5930+1186)/175
=(1361-5930)/175
=-4569/175
=-(26*175+19)/175
=-26 又 19/175
简便计算七十八又七分之六除以六
78又6/7÷6
=(78+6/7)×1/6
=78×1/6+6/7×1/6
=13+1/7
=13又1/7
(20.04-21×七分之六)÷5.1的简便计算
(20.04-21×7分之6)÷5.1
=(20.04-18)÷5.1
=2.04÷5.1
=20.4÷51
=0.4
19乘以七分六减去六乘以七分之五求简便过程
原式=(6/7)×(19-5)=(6/7)×14=6×2=12
21又十七分之七除以七简便计算
分成21+十七分之七
两个数分别除以7再加起来
=3+十七分之1
=3又十七分之一
35×(五分之三+七分之六)【简便计算】
解:
35×(五分之三+七分之六)
=35×五分之三+35×七分之六
=7x3+5x6
=21+30
=51
(四十二减七分之六)除以六,用简便演算法
(42-6/7)/6
=42/6-6/7/6
=7-6/7x1/6
=7-1/7
=48/7
七分之六减九分之七加九分之八怎样简便计算
七分之六减九分之七加九分之八怎样简便计算
=6/7+(8/9-7/9)
=6/7+1/9
=54/63+7/63
=61/63
(-79又七分之六)乘以七利用乘法分配理怎么算
利用乘法分配理怎么算
(-79又6/7)×7
=(-80+1/7)×7
=-80×7+1/7×7
=-5600+1
=-5999