(9999*9999+19999)/1000000怎么用简便方式计算?
问题描述:
(9999*9999+19999)/1000000怎么用简便方式计算?
答
(9999×9999+19999)÷1000000
=(9999×9999+10000+9999)÷1000000
=[9999×(9999+1)+10000]÷1000000
=(9999×10000+10000)÷1000000
=10000×(9999+1)÷1000000
=10000×10000÷1000000
=100