题目内容
|
2.5:2.75 | ||||
| 0.5吨:25千克 | 0.6千米:180米. |
(1)
:
,
=(
×15):(
×15),
=10:4,
=5:2;
:
,
=5:2,
=5÷2,
=
.
(2)2.5:2.75,
=(2.5×20):(2.75×20),
=50:55,
=10:11;
2.5:2.75,
=10:11,
=10÷11,
=
.
(3)0.5吨:25千克,
=500千克:25千克,
=(500÷25):(25÷25),
=20:1;
0.5吨:25千克,
=20:1,
=20÷1,
=20.
(4)0.6千米:180米,
=600米:180米,
=(600÷60):(180÷60),
=10:3;
0.6千米:180米,
=10:3,
=10÷3,
=
.
| 2 |
| 3 |
| 4 |
| 15 |
=(
| 2 |
| 3 |
| 4 |
| 15 |
=10:4,
=5:2;
| 2 |
| 3 |
| 4 |
| 15 |
=5:2,
=5÷2,
=
| 5 |
| 2 |
(2)2.5:2.75,
=(2.5×20):(2.75×20),
=50:55,
=10:11;
2.5:2.75,
=10:11,
=10÷11,
=
| 10 |
| 11 |
(3)0.5吨:25千克,
=500千克:25千克,
=(500÷25):(25÷25),
=20:1;
0.5吨:25千克,
=20:1,
=20÷1,
=20.
(4)0.6千米:180米,
=600米:180米,
=(600÷60):(180÷60),
=10:3;
0.6千米:180米,
=10:3,
=10÷3,
=
| 10 |
| 3 |
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