问题
填空题
1.2:
|
答案
化成最简整数比是:1.2:
=3 5
:12 10
=3 5
:6 5
=(3 5
×5):(6 5
×5)=6:3=(6÷3):(3÷3)=2:13 5
比值是:1.2:
=3 5
:12 10
=3 5
÷12 10
=3 5
×12 10
=2.5 3
故填:2:1,2.
1.2:
|
化成最简整数比是:1.2:
=3 5
:12 10
=3 5
:6 5
=(3 5
×5):(6 5
×5)=6:3=(6÷3):(3÷3)=2:13 5
比值是:1.2:
=3 5
:12 10
=3 5
÷12 10
=3 5
×12 10
=2.5 3
故填:2:1,2.