问题
填空题
|
答案
(1)
:1 5 1 2
=(
×10):(1 5
×10)1 2
=2:5;
(2)
:1 5 1 2
=
÷1 5 1 2
=
×21 5
=
;2 5
故答案为:2:5,
.2 5
|
(1)
:1 5 1 2
=(
×10):(1 5
×10)1 2
=2:5;
(2)
:1 5 1 2
=
÷1 5 1 2
=
×21 5
=
;2 5
故答案为:2:5,
.2 5