题目内容
化简比.
4.2:0.350.35:
:
.
4.2:0.350.35:
| 7 |
| 3 |
| 1 |
| 4 |
| 2 |
| 5 |
4.2:0.35,
=(4.2×100):(0.35×100),
=420:35,
=(420÷35):(35÷35),
=12:1;
0.35:
,
=(0.35×3):(
×3),
=1.05:7,
=(1.05×100):(7×100),
=105:700,
=(105÷35):(700÷35),
=3:20;
:
,
=(
×20):(
×20),
=5:8.
=(4.2×100):(0.35×100),
=420:35,
=(420÷35):(35÷35),
=12:1;
0.35:
| 7 |
| 3 |
=(0.35×3):(
| 7 |
| 3 |
=1.05:7,
=(1.05×100):(7×100),
=105:700,
=(105÷35):(700÷35),
=3:20;
| 1 |
| 4 |
| 2 |
| 5 |
=(
| 1 |
| 4 |
| 2 |
| 5 |
=5:8.
练习册系列答案
相关题目