1. 做一做，算一算。
$16×4=$
$34×5=$

() + () = ()

$16×4=64$
$34×5 = 170$
| $×$ | $30$ | $4$ |
| --- | --- | --- |
| $5$ | $150$ | $20$ |
$150 + 20=170$

2. 计算。
$46×5=$ $91÷7=$ $208×4=$ $642÷3=$
$162÷9=$ $120×7=$ $960÷8=$ $125×8=$

$46×5=230$
$91÷7=13$
$208×4=832$
$642÷3=214$
$162÷9=18$
$120×7=840$
$960÷8=120$
$125×8=1000$

3. 不计算，在$◯$里填上“＞”“＜”或“=”。
$46 + 83◯95 + 46$ $54×3◯45×3$
$456÷4◯456÷2$ $460 - 83◯250 - 83$

1. $46 + 83＜95 + 46$
2. $54×3＞45×3$
3. $456÷4＜456÷2$
4. $460 - 83＞250 - 83$

4. 列竖式计算。
$23×4=$ $154×6=$ $250×3=$ $209×4=$
$960÷3=$ $861÷7=$ $124÷5=$ $531÷4=$

$23×4=92$
```
23
× 4
----
92
```
$154×6=924$
```
154
× 6
-----
924
```
$250×3=750$
```
250
× 3
-----
750
```
$209×4=836$
```
209
× 4
-----
836
```
$960÷3=320$
```
320
3)960
9
---
6
6
---
0
```
$861÷7=123$
```
123
7)861
7
---
16
14
---
21
21
---
0
```
$124÷5=24……4$
```
24
5)124
10
---
24
20
---
4
```
$531÷4=132……3$
```
132
4)531
4
---
13
12
---
11
8
---
3
```