ppts.net
当前位置:首页>>关于简便计算:1,95.5-81/7.5-9.2 2,9.99/(50*1.11...的资料>>

简便计算:1,95.5-81/7.5-9.2 2,9.99/(50*1.11...

1、95.5-81/7.5-9.2 =14.5/(-1.7) =-145/17 2、9.99/(50*1.11) =(9*1.11)/(50*1.11) =9/50 3、【8+(0.5-0.2)/1.2】*0.24 =8*0.24+0.3/0.2 =(10-2)*0.24+1.5 =2.4-0.48+1.5 =3.9-0.48 =3.42

我只能说一下这种题的方法。 在遇到111和888,999,666,555,222等计算时,可以888=111*8,999=9*111等。 方法等于数千道题。 希望你遇到类似的题,能够会做。

.1000-91-1-92-2-93-3-94-4-95-5-96-6-97-7-98-8-99-9=1000-(91+9)-(92+8)-.(99-1)=1000-900=100

import java.util.Scanner; public class Sumers{ public static void main(String[] args){ Scanner in=new Scanner(System.in); int j ; double sum=0; double fenZi=1.0; double fenMu=1.0; int flag =1; System.out.print("请输入你需要加到...

2/(1*3)+2/(3*5)+2/(5*7+2/(7*9)+...+2/(95*97)+2/(97*99) =1-1/3+1/3-1/5+1/5-1/7+1/7-1/9+1/95-1/97+1/97-1/99 =1-1/99 =98/99

1-1/n^2=(n-1)(n+1)/n² 原式=(1/2) *(3/2) * (2/3) *(4/3) * (3/4)*(5/4) *.......*98/99 * 100/99 =(1/2) * (100/99) =50/99

原式=(10-0.01)x(50x1+50x0.1+50x0.01)+299 =(10-0.01)x(50+5+0.5)+299 =(10-0.01)x55.5+299 =10x55.5-0.01x55.5+299 =555-0.555+299 =853.445

1)809x(99+1) =809x100 =80900 2)9/20÷[1/2x6/5)] =9/20x5/3 =3/4

原式=(9.99/1.11)/50+299=9/50+299=299又9/50

网站首页 | 网站地图
All rights reserved Powered by www.ppts.net
copyright ©right 2010-2021。
内容来自网络,如有侵犯请联系客服。zhit325@qq.com