题目内容
解比例.
| 56:X=7:8 |
|
3.2:0.6=X:4.5. |
根据题意可得:
(1)56:X=7:8,
7X=56×8,
7X=448,
7X÷7=448÷7,
X=64;
(2)
:X=
:
,
X=
×
,
X=
,
X÷
=
÷
,
X=
;
(3)3.2:0.6=X:4.5,
0.6X=3.2×4.5,
0.6X=14.4,
0.6X÷0.6=14.4÷0.6,
X=24.
(1)56:X=7:8,
7X=56×8,
7X=448,
7X÷7=448÷7,
X=64;
(2)
| 1 |
| 4 |
| 1 |
| 3 |
| 8 |
| 9 |
| 1 |
| 3 |
| 1 |
| 4 |
| 8 |
| 9 |
| 1 |
| 3 |
| 2 |
| 9 |
| 1 |
| 3 |
| 1 |
| 3 |
| 2 |
| 9 |
| 1 |
| 3 |
X=
| 2 |
| 3 |
(3)3.2:0.6=X:4.5,
0.6X=3.2×4.5,
0.6X=14.4,
0.6X÷0.6=14.4÷0.6,
X=24.
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解比例.
| 56:X=7:8 | 3.2:0.6=X:4.5. |