(9999×9999+19999)÷1000000简算与巧算
来源:学生作业帮 编辑:搜搜做题作业网作业帮 分类:数学作业 时间:2024/07/26 16:27:33
(9999×9999+19999)÷1000000简算与巧算
![(9999×9999+19999)÷1000000简算与巧算](/uploads/image/z/16253046-54-6.jpg?t=%289999%C3%979999%2B19999%29%C3%B71000000%E7%AE%80%E7%AE%97%E4%B8%8E%E5%B7%A7%E7%AE%97)
(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选我吧.
=(9999×9999+10000+9999)÷1000000
=[9999×(9999+1)+10000]÷1000000
=(9999×10000+10000)÷1000000
=10000×(9999+1)÷1000000
=10000×10000÷1000000
=100选我吧.