199999 99999×9999用简便方法计算?

2025-03-17 07:46:34
推荐回答(3个)
回答1:

简便计算:9999×9999+19999

回答2:

简便计算如下:
=199999+99999×(10000-1)
=199999-99999+99999×10000
=100000+999990000
=1000090000

回答3:

199999+99999×99999
=100000+99999+99999²
=99999+1+99999+99999²
=99999²+2×99999+1²
=(99999+1)²
=100000²
=10000000000
=10^10