题目内容
| 化简: ①35:45 | ②360:450 | ③0.3:0.15 | ||||||
④18:
| ⑤6:0.36 | ⑥
| ||||||
⑦0.6:
| ⑧
|
①35:45,
=(35÷5):(45÷5),
=7:9;
②360:450,
=(360÷90):(450÷90),
=4:5;
③0.3:0.15,
=(0.3×20):(0.15×20),
=6:3,
=2:1;
④18:
,
=(18×3):(
×3),
=54:2,
=27:1;
⑤6:0.36,
=(6×50):(0.36×50),
=300:18,
=(300÷6):(18÷6),
=50:3;
⑥
:
,
=(
×20):(
×20),
=3:16;
⑦0.6:
,
=(0.6×5):(
×5),
=3:2;
⑧
:6,
=(
×3):(6×3),
=2:18,
=1:9.
=(35÷5):(45÷5),
=7:9;
②360:450,
=(360÷90):(450÷90),
=4:5;
③0.3:0.15,
=(0.3×20):(0.15×20),
=6:3,
=2:1;
④18:
| 2 |
| 3 |
=(18×3):(
| 2 |
| 3 |
=54:2,
=27:1;
⑤6:0.36,
=(6×50):(0.36×50),
=300:18,
=(300÷6):(18÷6),
=50:3;
⑥
| 3 |
| 20 |
| 4 |
| 5 |
=(
| 3 |
| 20 |
| 4 |
| 5 |
=3:16;
⑦0.6:
| 2 |
| 5 |
=(0.6×5):(
| 2 |
| 5 |
=3:2;
⑧
| 2 |
| 3 |
=(
| 2 |
| 3 |
=2:18,
=1:9.
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