小别离完整版:3.5×5/4+1.25×27/10+3.8÷4/5
来源:百度文库 编辑:高校问答 时间:2024/05/04 17:52:49
怎么简便算???????????????????????????????????
一楼的方法最好
可惜最后结果错了
是12.5
7/2×5/4+5/4×27/10+19/5×5/4
=35/8+27/8+38/8
=100/8
=12.5
3.5×5/4+1.25×27/10+3.8÷4/5
=3.5*5/4+1.25*27/10+3.8*5/4
=5/4*(3.5+27/10+3.8)
=5/4*(3.5+2.7+3.8)
=5/4*[3.5+(2.7+3.8)]
=5/4*(3.5+6.5)
=5/4*10
=25/2
=12.5
*为乘号
3.5×5/4+1.25×27/10+3.8÷4/5
=3.5*5/4+1.25*27/10+3.8*5/4
=5/4*(3.5+27/10+3.8)
=5/4*(3.5+2.7+3.8)
=5/4*[3.5+(2.7+3.8)]
=5/4*(3.5+6.5)
=5/4*10
=25/2
=12.5
*为乘号
5/4(35/10+37/10+38/10)
=5/4(100/10)
=10 5/4
3.5×5/4+1.25×27/10+3.8÷4/5
x-(4/11x+5)/(4/11x+5)=27/17怎么解?
256,269,286,302,( ) // 2,3/2,4/3,( ),6/5 // 3,10,( ),27,37 //
3/15,1/3,3/7,1/2,( ) A.5/8,B.4/9,C.15/27,D.-3
zhidao.baidu.com/qustion/505627.html9k2006-4-27
民民买书用了他积蓄的4/11多5元,剩下的钱是用去的27/17,他原有多少钱?
找规律27,16,5,(),1/7
1/2、1/3、2/9、()、4/27、()……
3/2 2/3 5/4 4/5 ()
(-8)+10+2+(-1) 5+(-6)+3+9+(-4)+(-7) (-0.8)+1.2+(-0.7)+(-2.1)+0.8+3.5