问题
填空题
|
答案
(1)
:0.25,3 4
=
:3 4
,1 4
=(
×4):(3 4
×4),1 4
=3:1;
(2)1.5小时:45分,
=90分:45分,
=90÷45,
=2;
故答案为:3:1;2.
|
(1)
:0.25,3 4
=
:3 4
,1 4
=(
×4):(3 4
×4),1 4
=3:1;
(2)1.5小时:45分,
=90分:45分,
=90÷45,
=2;
故答案为:3:1;2.