问题 填空题
(3÷
999
9999
):(5÷
999
9999
)
=______:______.
答案

(3÷

999
9999
):(5÷
999
9999
),

=(3×

1111
111
):(5×
1111
111
),

=

3333
111
5555
111

=(3333÷1111):(5555÷1111),

=3:5;

故答案为:3,5.

单项选择题
单项选择题