✔ 最佳答案
90.7 ÷2分之15=?
=90.7/(15/2)
=90.7*2/15
=181.4/15
=1814/150
=120+14/15
2014-02-14 08:47:50 補充:
90.7 ÷2分之15=? =90.7/(15/2)=90.7*2/15=181.4/15=1814/150=120+14/15
22.8 ÷14又5分之4=? =22.8/(14+4/5)=22.8/(74/5)=22.8*5/74=114/74=57/37=1+20/37
1又10分之1+9.5 ÷25分之4=? =1+1/10+9.5/(4/25)=1.1+9.5*25/4=1.1+9.5*(25*4)/16=1.1+950/16=1.1+59.375=60.475=60+475/1000=60+19/40
16分之95-6.13又3分之1=?=95/16-(6.13+1/3)=95/16-(18.39+1)/3=95/16+19.39/3=(95*3+19.39*16)/3*16=(285+310.24)/48=595.24/48=59524/4800=12+1924/4800=12+481/1200
12又5分之1-4.2x13分之6=?=12+1/5-4.2*6/13=12+1/5-42*6/130=12+1/5-252/130=12+1/5-1-122/130=11+1/5-61/65=11+(13-61)/65=11-48/65=10+(65-48)/65=10+17/65
3.6x30分之97=?=3.6*97/30=36*97/10*30=12*97/100=3*97/25=291/25=11+16/25
9又5分之3-1.4x16分之3=? =9+3/5-1.4*3/16=9.6-4.2/16=(9.6*16-4.2)/16=(153.6-4.2)/16=149.4/16=1494/160=747/80=9+27/80
2014-02-14 08:48:54 補充:
小學生需要計算過程..........
2014-02-14 08:51:08 補充:
32.94x27分之41=?
=32.94*41/27
=3.66*41/3
=1.22*41
=50.02
=50+2/100
=50+1/50
2014-02-14 08:52:10 補充:
7分之5-3.4x7分之1=?
=5/7-3.4*1/7
=(5-3.4)/7
=1.6/7
=16/70
=8/35