题目内容
解方程和解比例.
| x÷20%=14 |
|
(1)
+
x=
,
+
x-
=
-
,
x=
,
x×4=
×4,
x=1;
(2)x÷20%=14,
x÷0.2=14,
x÷0.2×0.2=14×0.2,
x=2.8;
(3)
:x=
,
:x=1:8,
x=
×
,
x=
.
| 1 |
| 4 |
| 1 |
| 4 |
| 1 |
| 2 |
| 1 |
| 4 |
| 1 |
| 4 |
| 1 |
| 4 |
| 1 |
| 2 |
| 1 |
| 4 |
| 1 |
| 4 |
| 1 |
| 4 |
| 1 |
| 4 |
| 1 |
| 4 |
x=1;
(2)x÷20%=14,
x÷0.2=14,
x÷0.2×0.2=14×0.2,
x=2.8;
(3)
| 1 |
| 3 |
| 1 |
| 8 |
| 1 |
| 3 |
x=
| 1 |
| 3 |
| 1 |
| 8 |
x=
| 1 |
| 24 |
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