问题
解答题
求比值. 12.75:1.25
|
答案
12.75:1.25,
=1275÷125,
=51÷5,
=10
;1 5
:7 2
,30 7
=
÷7 2
,30 7
=
×7 2
,7 30
=
.49 60
求比值. 12.75:1.25
|
12.75:1.25,
=1275÷125,
=51÷5,
=10
;1 5
:7 2
,30 7
=
÷7 2
,30 7
=
×7 2
,7 30
=
.49 60