ldcf.net
当前位置:首页 >> 1.72X1.4÷1.72X1.4(简便算法) >>

1.72X1.4÷1.72X1.4(简便算法)

=12.6/1.4*(7.6/1.9)*(2.32/2.9) =9*4*0.8 =36*0.8 =144/5=28.8

12.6x7.6x2.32➗1.9➗1.4➗2.9如何用简便计算? 12.6x7.6x2.32➗1.9➗1.4➗2.9 =(12.6÷4)*(7.6÷1.9)*(2.32÷2.9) =3.15*4*0.8 =10.08

X=[2,4,6,7,8]; Y=[0.4,0.6,0.8,0.9,1.0,1.2,1.4,2.0,3.10,4.3,5.5,6.0,7.0]; >> Z=[0.446,0.419,0.229,0.688,0.012; 0.457,0.473,0.400,0.396,0.372; 0.463,0.471,0.497,0.417,0.431; 0.504,0.492,0.475,0.140,0.519; 0.837,0.894,0.774,0.778,...

参考

7.8x1.4十7.8x2.6十7.8x3.5十7.8一2 =7.8x(1.4十2.6十3.5十1)-2 =7.8×8.5一2 =66.3-2 =64.3

(1)6.9x-4.1=9.7, 6.9x-4.1+4.1=9.7+4.1, 6.9x÷6.9=13.8÷6.9, x=2;(2)2(x+1.7)=9.2, 2(x+1.7)÷2=9.2÷2, x+1.7-1.7=4.6-1.7, x=2.9;(3)4.5x+2=15.5, 4.5x=2-2=15.5-2, 4.5x÷4.5=13.5÷4.5, x=3;(4)9x-5x=0.64, 4x=0.64,...

【1】1.4×7+x=12.8 x=12.8-9.8; x=3; 【2】(6+3x)÷4=9; 6+3x=36; 3x=30; x=10; 【3】5分之2x+2分之1=24分之19 2x/5=19/24-12/24; 2x/5=7/24; x=35/48; 【4】18÷4x-3=9(有补充!) 18÷4x=12; 4x=18/12; 4x=3/2; x=3/8; 【5】3.4+9.8=1.4+9x 9x...

一、软件下载 1、下载JDK(下面分别是32位系统和64位系统下的版本) http://download.oracle.com/otn-pub/java/jdk/7u9-b05/jdk-7u9-linux-i586....

=(0.5+1.5)x11÷2 =1x11

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