x:14=6:28
=
:
=x:
.解:(1)x:14=6:28,28x=14×6,
28x÷28=84÷28,
x=3;
(2)
=
,0.25x=0.75×3,
0.25x÷0.25=2.25÷0.25,
x=9;
(3)
:
=x:
,
x=
×
,
x÷
=
÷
,x=1
.分析:先根据比例基本性质化简,再依据等式性质:
(1)两边同时除以28求解,
(2)两边同时除以0.25求解,
(3)两边同时除以
求解.点评:本题主要考查了学生依据等式性质解比例知识掌握.
编辑:chaxungu时间:2026-04-27 08:05:22分类:小学数学题库
=
:
=x:
.解:(1)x:14=6:28,
=
,
:
=x:
,
x=
×
,
x÷
=
÷
,
.
求解.