ldcf.net
当前位置:首页 >> 99x99十199用简便方法怎么算 >>

99x99十199用简便方法怎么算

=99X99+99+100 =99X(99+1)+100 =99X100+100 =(99+1)X100 =100X100 =10000 望采纳

你好: 99×99+199 =99×99+100+99 =99×(99+1)+100 =99×100+100 =100×100 =10000

99x999+199 =99x999+99+100 =99x(999+1)+100 =99x1000+100 =99000+100 =99100

99x999+199 =99x999+99+100 =99x(999+1)+100 =99x1000+100 =99000+100 =99100

=99*99+100+99 =99*(99+1)+100 =99*100+100 =(99+1)*100 =100*100 =10000

99X99十199 =99X99十99+100 =99x(99+1)+100 =99x100+100 =9900+100 =10000

解: 99x99x99 =99X(100-1)(100-1) =99X(100-1)² =99X[100²-2X100X1+1²] =99X(10000-200+1) =99X10000-99X200+99 =990000-19800+99 =970299

99x999+199 =99x999+99+100 =99x(999+1)+100 =99x1000+100 =99000+100 =99100

99x99+199 =(100-1)x99+(100+99) =9900-99+100+99 =10000

99x999十199的简便计算? 99x999十199 =99*999+99+100 =99*(999+1)+100 =99*1000+100 =990100

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