题目内容
| 4 |
| 5 |
(1)
:0.4,
=
:
,
=(
×5):(
×5),
=4:2,
=(4÷2):(2÷2),
=2:1;
(2)
:0.4,
=
:
,
=
÷
,
=
×
,
=2;
故答案为:2:1;2.
| 4 |
| 5 |
=
| 4 |
| 5 |
| 2 |
| 5 |
=(
| 4 |
| 5 |
| 2 |
| 5 |
=4:2,
=(4÷2):(2÷2),
=2:1;
(2)
| 4 |
| 5 |
=
| 4 |
| 5 |
| 2 |
| 5 |
=
| 4 |
| 5 |
| 2 |
| 5 |
=
| 4 |
| 5 |
| 5 |
| 2 |
=2;
故答案为:2:1;2.
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