题目内容
化简下列各比.
39:91
1.25:2
:
:
.
39:91
1.25:2
| 7 |
| 12 |
| 14 |
| 3 |
| 1 |
| 3 |
| 3 |
| 5 |
39:91
=(39÷13):(91÷13)
=3:7;
1.25:2
=(1.25×4):(2×4)
=5:8;
:
=(
×12):(
×12)
=7:56
=1:8;
:
=(
×15):(
×15)
=5:9.
=(39÷13):(91÷13)
=3:7;
1.25:2
=(1.25×4):(2×4)
=5:8;
| 7 |
| 12 |
| 14 |
| 3 |
=(
| 7 |
| 12 |
| 14 |
| 3 |
=7:56
=1:8;
| 1 |
| 3 |
| 3 |
| 5 |
=(
| 1 |
| 3 |
| 3 |
| 5 |
=5:9.
练习册系列答案
相关题目