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四、列竖式计算。
$467×2 =$
$68×5 =$
$215×3 =$
$467×2 =$
$68×5 =$
$215×3 =$
答案
$467×2 = 934$
```
4 6 7
× 2
--------
9 3 4
```
$68×5 = 340$
```
6 8
× 5
--------
3 4 0
```
$215×3 = 645$
```
2 1 5
× 3
--------
6 4 5
```
```
4 6 7
× 2
--------
9 3 4
```
$68×5 = 340$
```
6 8
× 5
--------
3 4 0
```
$215×3 = 645$
```
2 1 5
× 3
--------
6 4 5
```
五、计算下面各题。
134 - 34 × 0
18 ÷ 3 × 0
(327 - 287) ÷ 8
0 × 18 + 214
134 - 34 × 0
18 ÷ 3 × 0
(327 - 287) ÷ 8
0 × 18 + 214
答案
134 - 34 × 0
= 134 - 0
= 134
18 ÷ 3 × 0
= 6 × 0
= 0
(327 - 287) ÷ 8
= 40 ÷ 8
= 5
0 × 18 + 214
= 0 + 214
= 214
= 134 - 0
= 134
18 ÷ 3 × 0
= 6 × 0
= 0
(327 - 287) ÷ 8
= 40 ÷ 8
= 5
0 × 18 + 214
= 0 + 214
= 214
1. (1 + 2 + 3 + … + 100) × 0 =
提示：把括号里的算式看成一个数，算式就变成一个数×0。
提示：把括号里的算式看成一个数，算式就变成一个数×0。
答案
(1 + 2 + 3 + … + 100) × 0 = 0
2. 在里填上合适的数。
$\begin{array}{r} □□\\ ×\quad 6\\ \hline 72\end{array}$
$\begin{array}{r} □5\\ ×\quad $
$□\\ \hline 75\end{array}$
$\begin{array}{r} 21□\\ ×\quad \quad 4\\ \hline 87□\end{array}$
$\begin{array}{r} □□\\ ×\quad 6\\ \hline 72\end{array}$
$\begin{array}{r} □5\\ ×\quad $
$□\\ \hline 75\end{array}$$\begin{array}{r} 21□\\ ×\quad \quad 4\\ \hline 87□\end{array}$
答案
$\begin{array}{r} \boxed{1}\ \boxed{2}\\ ×\quad 6\\ \hline 7\ 2\end{array}$
$\begin{array}{r} \boxed{1}\ 5\\ ×\quad \boxed{5}\\ \hline 7\ 5\end{array}$
$\begin{array}{r} 2\ 1\ \boxed{9}\\ ×\quad \quad 4\\ \hline 8\ 7\ \boxed{6}\end{array}$
$\begin{array}{r} \boxed{1}\ 5\\ ×\quad \boxed{5}\\ \hline 7\ 5\end{array}$
$\begin{array}{r} 2\ 1\ \boxed{9}\\ ×\quad \quad 4\\ \hline 8\ 7\ \boxed{6}\end{array}$
