1. 在商的合适位置点上小数点。

1. 3.6
2. 16.2
3. 2.9

2. 用竖式计算。(带“※”的要验算。)
52.8÷6=
※83.4÷3=
28.8÷9=
※37.56÷6=
40.7÷11=
62.4÷24=

52.8÷6=8.8
```
8.8
6)52.8
48
---
48
48
---
0
```
※83.4÷3=27.8
```
27.8
3)83.4
6
---
23
21
---
24
24
---
0
```
验算：
```
27.8
× 3
-----
83.4
```
28.8÷9=3.2
```
3.2
9)28.8
27
---
18
18
---
0
```
※37.56÷6=6.26
```
6.26
6)37.56
36
---
15
12
---
36
36
---
0
```
验算：
```
6.26
× 6
-----
37.56
```
40.7÷11=3.7
```
3.7
11)40.7
33
---
77
77
---
0
```
62.4÷24=2.6
```
2.6
24)62.4
48
---
144
144
---
0
```