ldcf.net
当前位置:首页 >> 96乘94简便运算 >>

96乘94简便运算

9024

首先,把95当成固定的字母A,96即为A+1,94即为A-1; 所以96乘以95分之94表示如下: (A+1)*(A-1)/A, 根据平方差公式:(A+B)(A-B)=A的平方-B的平方 所以,(A+1)*(A-1)=A²-1, 以上即为:(A+1)*(A-1)/A=(A^2-1)/A 也就是=95的平方-1,...

(95+1)(95-1)/95=95^2-1/95=95-1/95=94又94/95

16×94+96 =16×94+16×6 =16×(94+6) =16×100 =1600 望采纳,谢谢!

16×94加96 =16×94+6×16 =16×(94+6) =16×100 =1600

305-(94.35-96) =305+(96-94.35) =305+1.65 =306.65

简便运算90+91+92+93+94+95+96+97+98+99 =90+(91+99)+(92+98)+(93+97)+(94+96)+95 =90+95+190x4 =185+760 =200+760-15 =845

1996×1995-1997×1994 =1996×1995-(1996+1)×(1995-1) =1996×1995-1996×1995-1995+1996+1 =1996-1995+1 =1+1 =2

(100-98)+(96-94)+(92-90)+...+(4-2)=2×25=50

96.94x99+76.94 =96.94x99+96.94-20 =96.94x(99+1)-20 =96.94x100-20 =9694-20 =9674

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