1. 算一算。

1.
$\begin{array}{r}324 \\ +165 \\ \hline489\end{array}$
2.
$\begin{array}{r}459 \\ +250 \\ \hline709\end{array}$
3.
$\begin{array}{r}736 \\ +412 \\ \hline1148\end{array}$
4.
$\begin{array}{r}518 \\ +65 \\ \hline583\end{array}$
5.
$\begin{array}{r}46 \\ +573 \\ \hline619\end{array}$
6.
$\begin{array}{r}837 \\ +262 \\ \hline1099\end{array}$
7.
$\begin{array}{r}242 \\ +467 \\ \hline709\end{array}$
8.
$\begin{array}{r}629 \\ +158 \\ \hline787\end{array}$
9.
$\begin{array}{r}382 \\ +587 \\ \hline969\end{array}$

2. 列竖式计算。
$423 + 349 =$
$501 + 342 =$
$726 + 522 =$
$301 + 389 =$
$708 + 32 =$
$54 + 364 =$

```
423
+ 349
------
772
501
+ 342
------
843
726
+ 522
------
1248
301
+ 389
------
690
708
+ 32
------
740
54
+ 364
------
418
```