题目内容
解比例
| 38:13=x:26 |
| 1.25:0.25=x:1.6 |
|
(1)38:13=x:26,
13x=38×26,
13x÷13=988÷13,
x=76;
(2)
=
,
4x=1.2×5,
4x÷4=6÷4,
x=1.5;
(3)1.25:0.25=x:1.6,
0.25x=1.25×1.6,
0.25x÷0.25=2÷0.25,
x=8;
(4)
:x=3:12,
3x=
×12,
3x÷3=9÷3,
x=3.
13x=38×26,
13x÷13=988÷13,
x=76;
(2)
| 1.2 |
| x |
| 4 |
| 5 |
4x=1.2×5,
4x÷4=6÷4,
x=1.5;
(3)1.25:0.25=x:1.6,
0.25x=1.25×1.6,
0.25x÷0.25=2÷0.25,
x=8;
(4)
| 3 |
| 4 |
3x=
| 3 |
| 4 |
3x÷3=9÷3,
x=3.
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