1. 用竖式计算。(带“☆”的要验算。)
☆ 6.24÷0.08 =
78
0.08)6.24
56
---
64
64
---
0
验算：
0.08
× 78
-----
64
56
-----
6.24
☆ 36.8÷0.23 =
160
0.23)36.80
23
---
138
138
---
0
验算：
0.23
× 160
-----
138
23
-----
36.80
468÷0.36 =
1300
0.36)46800
36
---
108
108
---
0
0.625÷0.025 =
25
0.025)0.625
50
---
125
125
---
0

```
☆ 6.24÷0.08 = 78
78
0.08)6.24
56
---
64
64
---
0
验算：
0.08
× 78
-----
64
56
-----
6.24
☆ 36.8÷0.23 = 160
160
0.23)36.80
23
---
138
138
---
0
验算：
0.23
× 160
-----
138
23
-----
36.80
468÷0.36 = 1300
1300
0.36)46800
36
---
108
108
---
0
0.625÷0.025 = 25
25
0.025)0.625
50
---
125
125
---
0
```

2. 计算下列各题,能简算的要简算。
7.2÷(1.1 + 0.7)×0.05
4.8×12 - 4.8×2
1.6×4 + 1.6×6
[64 - (1.95 - 1.95)]÷1.6

7.2÷(1.1 + 0.7)×0.05
=7.2÷1.8×0.05
=4×0.05
=0.2
4.8×12 - 4.8×2
=4.8×(12 - 2)
=4.8×10
=48
1.6×4 + 1.6×6
=1.6×(4 + 6)
=1.6×10
=16
[64 - (1.95 - 1.95)]÷1.6
=[64 - 0]÷1.6
=64÷1.6
=40