题目内容
化简比.
7
:0.24
12.6:0.4
:
小时:30分.
7
| 1 |
| 5 |
12.6:0.4
| 1 |
| 20 |
| 4 |
| 5 |
| 1 |
| 3 |
(1)7
:0.24,
=
:
,
=
÷
,
=
×
,
=30:1;
(2)12.6:0.4,
=(12.6×10):(0.4×10),
=126:4,
=(126÷2):(4÷2),
=63:2;
(3)
:
,
=
÷
,
=
×
,
=
;
(4)
小时:30分
=20分:30分,
=20:30,
=(20÷10):(30÷10),
=2:3;
故答案为:30:1,63:2,
,2:3.
| 1 |
| 5 |
=
| 36 |
| 5 |
| 6 |
| 25 |
=
| 36 |
| 5 |
| 6 |
| 25 |
=
| 36 |
| 5 |
| 25 |
| 6 |
=30:1;
(2)12.6:0.4,
=(12.6×10):(0.4×10),
=126:4,
=(126÷2):(4÷2),
=63:2;
(3)
| 1 |
| 20 |
| 4 |
| 5 |
=
| 1 |
| 20 |
| 4 |
| 5 |
=
| 1 |
| 20 |
| 5 |
| 4 |
=
| 1 |
| 16 |
(4)
| 1 |
| 3 |
=20分:30分,
=20:30,
=(20÷10):(30÷10),
=2:3;
故答案为:30:1,63:2,
| 1 |
| 16 |
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