题目内容
化简比.
:0.2
:
2米:135厘米.
| 4 |
| 5 |
| 1 |
| 4 |
| 1 |
| 7 |
2米:135厘米.
(1)
:0.2
=(
×5):(0.2×5)
=4:1;
(2)
:
=(
×28):(
×28)
=7:4;
(3)2米:135厘米
=200厘米:135厘米
=(200÷5):(135÷5)
=40:27.
| 4 |
| 5 |
=(
| 4 |
| 5 |
=4:1;
(2)
| 1 |
| 4 |
| 1 |
| 7 |
=(
| 1 |
| 4 |
| 1 |
| 7 |
=7:4;
(3)2米:135厘米
=200厘米:135厘米
=(200÷5):(135÷5)
=40:27.
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