99x99+9,怎么简便计算?

2025-04-02 06:00:46
推荐回答(5个)
回答1:

解:99x99+9等于( 9810 )
∵已知需求出99x99+9等于多少
A × (B + C)= A × B + A × C
∴99 × 99 + 9
= 9 × (11 × 99 + 1)
= 9 × (1089 + 1)
= 9 × 1090
= 9810
答:99x99+9等于9810

回答2:

9.9+9.9*99
=9.9*(99+1)
=9.9*100
=990

回答3:

99*999+999
=99*999+1*999
=(99+1)*999
=100*999
=99900.

回答4:

拿起手机里,打开界面。点击计算器。迅速点下99乘99加九

回答5:

原式=9.9*(1+99)
=9.9*100
=99