题目内容
|
0.48:
|
|
(1)
:
,
=(
×28):(
×28),
=12:15,
=4:5;
:
,
=4:5,
=4÷5,
=
.
(2)0.48:
,
=0.48:0.8,
=(0.48×50):(0.8×50),
=24:40,
=3:5;
0.48:
,
=3:5,
=3÷5,
=
.
(3)
m2:10dm2,
=25dm2:10dm2,
=(25÷5):(10÷5),
=5:2;
m2:10dm2,
=5:2,
=5÷2,
=
.
| 3 |
| 7 |
| 15 |
| 28 |
=(
| 3 |
| 7 |
| 15 |
| 28 |
=12:15,
=4:5;
| 3 |
| 7 |
| 15 |
| 28 |
=4:5,
=4÷5,
=
| 4 |
| 5 |
(2)0.48:
| 4 |
| 5 |
=0.48:0.8,
=(0.48×50):(0.8×50),
=24:40,
=3:5;
0.48:
| 4 |
| 5 |
=3:5,
=3÷5,
=
| 3 |
| 5 |
(3)
| 1 |
| 4 |
=25dm2:10dm2,
=(25÷5):(10÷5),
=5:2;
| 1 |
| 4 |
=5:2,
=5÷2,
=
| 5 |
| 2 |
练习册系列答案
相关题目