第1个回答 2009-06-16
[20*（50/3)]/3*9/1000
=0.125*0.25*4*8
=0.125*8+0.25*4
=1+1
=2
=[1000/3]/3*9/1000
=1000/9*9/1000
=1
6/7*5/9+6/7*4/9
=6/7*1
=6/7
123+459-23
=123-23+459
=559
84*99
=84*(100-1)
=84*100-84
=8316
36*101
=36*100+36
=3636
0.37*85+15*0.37
=0.37*100
=37
12*55+1.2*450
=12*55+12*45
=12*100
=1200
4/5*0.79+4/5*0.21
=4/5*1
=4/5
14*4/5+6÷5/4
=14*4/5+6*4/5
=20*4/5
=16
556-556*0.9
=556*1-556*0.9
=556*0.1
=55.6本回答被网友采纳
第2个回答 2009-06-16
6/7*5/9+6/7*4/9
=6/7*1
=6/7
123+459-23
=123-23+459
=559
84*99
=84*(100-1)
=84*100-84
=8316
36*101
=36*100+36
=3636
0.37*85+15*0.37
=0.37*100
=37
12*55+1.2*450
=12*55+12*45
=12*100
=1200
0.125*0.25*32
=0.125*0.25*4*8
=0.125*8*0.25*4
=1*1
=1
4/5*0.79+4/5*0.21
=4/5*1
=4/5
14*4/5+6÷5/4
=14*4/5+6*4/5
=20*4/5
=16
556-556*0.9
=556*1-556*0.9
=556*0.1
=55.6
第3个回答 2009-06-16
10/1.25
=10*8/(1.25*8)
=80/10=8
11*99+11
=11*(99+10)
=11*100
=1100