一、口算。(每题1分,共30分)
$900÷5= $ $32×30= $ $840÷21÷2= $
$75-57= $ $90÷5= $ $11×4+56= $
$480÷80= $ $306÷3= $ $21×(18+12)= $
$540÷60= $ $63÷21= $ $(81-24)÷3= $
$280÷40= $ $90×60= $ $5×7×20= $
$41×5= $ $64÷32= $ $360÷3×5= $
$147÷3= $ $87+13= $ $(366+74)÷11= $
$280-28= $ $24×50= $ $3×(50-5)= $
$40×34= $ $960÷12= $ $480÷3-90= $
$420÷14= $ $88÷22= $ $800÷40×56= $

1.180 2.960 3.20 4.18 5.18 6.100 7.6 8.102 9.630 10.9 11.3 12.19 13.7 14.5400 15.700 16.205 17.2 18.600 19.49 20.100 21.40 22.252 23.1200 24.135 25.1360 26.80 27.70 28.30 29.4 30.1120

二、用竖式计算,带*的要验算。(带*的每题4分,其余每题3分,共30分)
$275÷33$ $884÷40$ *$710÷40$
$891÷57$ $700÷16$ *$783÷18$
$318÷26$ $652÷61$ *$782÷37$

1.8……11 2.22……4 3.17……30 4.15……36 5.43……12 6.43……9 7.12……6 8.10……42 9.21……5

1. $275÷33$
```
8
33)275
264
---
11
```
$=8\cdots\cdots11$
2. $884÷40$
```
22
40)884
80
---
84
80
---
4
```
$=22\cdots\cdots4$
3. $710÷40$
```
17
40)710
40
---
310
280
---
30
```
$=17\cdots\cdots30$
验算：
```
17
×40
---
680
+30
---
710
```
4. $891÷57$
```
15
57)891
57
---
321
285
---
36
```
$=15\cdots\cdots36$
5. $700÷16$
```
43
16)700
64
---
60
48
---
12
```
$=43\cdots\cdots12$
6. $783÷18$
```
43
18)783
72
---
63
54
---
9
```
$=43\cdots\cdots9$
验算：
```
43
×18
---
344
43
---
774
+ 9
---
783
```
7. $318÷26$
```
12
26)318
26
---
58
52
---
6
```
$=12\cdots\cdots6$
8. $652÷61$
```
10
61)652
61
---
42
```
$=10\cdots\cdots42$
9. $782÷37$
```
21
37)782
74
---
42
37
---
5
```
$=21\cdots\cdots5$
验算：
```
21
×37
---
147
63
---
777
+ 5
---
782
```