(0.25+0.125)/(0.75*0.4)(是要简便运算的)
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(0.25+0.125)/(0.75*0.4)(是要简便运算的)
(0.25+0.125)/(0.75*0.4)(是要简便运算的)
(0.25+0.125)/(0.75*0.4)(是要简便运算的)
(0.25+0.125)/(0.75×0.4)
=(0.125×2+0.125)/(0.125×2×3×0.4)
=[0.125×(2+1)]/(0.125×2×3×0.4)
=(2+1)/(2×3×0.4)
=3/(2×3×0.4)
=1/(2×0.4)
=(1×5)/(2×0.4×5)
=5/4
只要把他们化成分数来看就很简单
(1/4+1/8)/(3/4*4/10)可以约掉很多
=5/4
3.125/{8*(0.75+0.25)+0.125}
0.25-3.25+0.75+0.125+0.875 要简算
(0.25+0.125)/(0.75*0.4)(是要简便运算的)
/-0.25/+(-3又4/3)-(-0.75)+/0.125/+7/8
|-0.75|+(+3又1/4)-(-0.125)-|-0.25|+(+5/8)
将0.75,0.25,0.125,0.375,0.625,0.875化成最简分数
—0.75+(4分之一)—(0.125)—|—0.25|要有过程
- |- 0.25 |+(+4分之3)-(-0.125)+|-0.75|
0.75+负四分之十一+0.125+负七分之五+负四又八分之一+0.25
0.75+(-四分之十一)+0.125+(-七分之五)+(4又八分之一)+0.25
0.75+(-四分之十一)+0.125+(-七分之五)+(4又八分之一)+0.25
0.75+负四分之十一+0.125+负七分之五+负四又八分之一+0.25
计算:|-0.25|+(-3又四分之一)-(-0.75)+|0.125|+八分之七
计算:|-0.25|+(-3又4/1)-(-0.75)+|-0.125|+8/7
x+y/0.75 +x/0.5=8 2x/0.25+1-2y/0.125=8
2009+2009*2008*0.25+2008*2009*0.75-8*2009*0.125*2008,简便计算 ,
0.25 0.25 0.25 0.25等于0.125
15.25×0.125×0.75×128