72*0.125*0.25*0.4怎样简便计算
来源:学生作业帮助网 编辑:作业帮 时间:2024/09/23 08:27:20
0.25*40.4+0.125*10.8=0.25*(40+.04)+0.125*(10+0.8)=0.25*40+0.25*0.4+0.125*10+0.125*0.8=10+0.1+1.25+0.
72*0.125*0.25*0.4=(72*1/8)*(1/4*0.4)=9*0.1=0.9
32:72=4:956:12=14:334:51=2:3111:210.42:0.7=3:52:0.25=16:110:0.125=80:18.8:55=4:25
加个括号就行:(4.52+5.48)-0.25*40=10-10=0除变成除以就行:8.4*(0.125-0.1除以0.8)=8.4*0=0
2×0.25×0.125=2×1/4×1/8=1/16再问:32*00.25*0.125再答:32×1/4×1/8=1
0.25*72*0.125=0.25*9*0.125*8=0.25(10-1)=2.5-0.25=2.25
0.125*0.25*0.5*64=0.125*8*0.25*4*0.5*2=1*1*1=1再问:8从哪来再答:64=8*4*2
1/8*1/4*1/2*2/5=1/160
0.25×32×0.125=0.25×4×8×0.125=(0.25×4)×(8×0.125)=1×1=1
0.25-x=0.125×0.625x=1/4-5/64x=11/64不明白欢迎来求助!多谢了!
5/13=0.3846153846153846很有意思的数字
0.25x32x0.125=(0.25x4)x(0.125x8)=1x1=1
8.4:3.6=2又3分之172:96=4分之37/10:14/15=4分之375/45=1又3分之20.125:0.25=2分之1
77.5×0.125+0.25×1.25=77.5×0.125+2.5×0.125=0.125×(77.5+2.5)=0.125×80=0.125×8×10=1×10=10
0.25*(-0.125)*(-64)=0.25×4×0.125×8×2=1×1×2=2
/>0.125:0.25=(0.125×1000):(0.25×1000)=125:250=1:2
0.25*0.25/(0.25+0.25)
0.125×0.25×32,=(0.125×8)×(0.25×4),=1×1,=1.
3.2×0.25×0.125=0.4×0.25×8×0.125=0.1×1=0.1
0.5+0.25+0.125+.+0.0078125=(1-0.5)+(0.5-0.25)+(0.25-0.125)+……+(0.015625-0.0078125)=1-0.0078125=0.992