题目内容
把下列的小数化成分数,把分数化成小数(不能化成有限小数的保留两位小数).
| 0.4= | 0.05= | 0.37= | 0.45= | 0.013= | ||||||||||
|
|
|
|
|
0.4=
=
; 0.05=
=
; 0.37=
; 0.45=
=
; 0.013=
;
=37÷100=0.37;
=9÷20=0.45;
=31÷40=0.775;
=7÷30≈0.23;
=51÷70≈0.73.
| 4 |
| 10 |
| 2 |
| 5 |
| 5 |
| 100 |
| 1 |
| 20 |
| 37 |
| 100 |
| 45 |
| 100 |
| 9 |
| 20 |
| 13 |
| 1000 |
| 37 |
| 100 |
| 9 |
| 20 |
| 31 |
| 40 |
| 7 |
| 30 |
| 51 |
| 70 |
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