1. 算一算，填一填。
$ \begin{array}{c c c c}172 ÷ 4= \boxed{43} & \begin{array}{c|c}4&\overset{\, \,\,1}{1}7\overset{\, \,\,2}{\vphantom{1}}\\ \hline&\underset{―}{16}\\ &12\\ &\underset{―}{12}\\ \hline&0\end{array} & \hspace{2cm} &256 ÷ 8= \boxed{32} \hspace{2cm} \begin{array}{c|c}8&\overset{\, \,\,2}{2}5\overset{\, \,\,6}{\vphantom{1}}\\ \hline&\underset{―}{24}\\ &16\\ &\underset{―}{16}\\ \hline&0\end{array} \\160 ÷ 4= \boxed{40} & & 240 ÷ 8= \boxed{30} & \\12 ÷ 4= \boxed{3} & & 16 ÷ 8= \boxed{2} & \\\end{array} $
$ \begin{array}{c c c c}672 ÷ 8= \boxed{84} & \begin{array}{c|c}8&\overset{\, \,\,6}{6}7\overset{\, \,\,2}{\vphantom{1}}\\ \hline&\underset{―}{64}\\ &32\\ &\underset{―}{32}\\ \hline&0\end{array} & \hspace{2cm} &594 ÷ 9= \boxed{66} \hspace{2cm} \begin{array}{c|c}9&\overset{\, \,\,5}{5}9\overset{\, \,\,4}{\vphantom{1}}\\ \hline&\underset{―}{54}\\ &54\\ &\underset{―}{54}\\ \hline&0\end{array} \\640 ÷ 8= \boxed{80} & & 540 ÷ 9= \boxed{60} & \\32 ÷ 8= \boxed{4} & & 54 ÷ 9= \boxed{6} & \\\end{array} $

43,40,3,32,30,2,84,80,4,66,60,6

172÷4，百位1＜4，商0不写，17÷4商4余1，12÷4商3，结果43；160÷4=40；12÷4=3。256÷8，百位2＜8，商0不写，25÷8商3余1，16÷8商2，结果32；240÷8=30；16÷8=2。672÷8，67÷8商8余3，32÷8商4，结果84；640÷8=80；32÷8=4。594÷9，59÷9商6余5，54÷9商6，结果66；540÷9=60；54÷9=6。

2. 计算。
$\begin{array}{c|c}5&315\\ \hline&\underset{―}{30}\\ &15\\ &\underset{―}{15}\\ \hline&0\end{array}$
$\begin{array}{c|c}9&432\\ \hline&\underset{―}{4}\\ &32\\ &\underset{―}{32}\\ \hline&0\end{array}$
$\begin{array}{c|c}7&504\\ \hline&\underset{―}{49}\\ &14\\ &\underset{―}{14}\\ \hline&0\end{array}$
$\begin{array}{c|c}7&315\\ \hline&\underset{―}{28}\\ &35\\ &\underset{―}{35}\\ \hline&0\end{array}$
$\begin{array}{c|c}8&432\\ \hline&\underset{―}{4}\\ &32\\ &\underset{―}{32}\\ \hline&0\end{array}$
$\begin{array}{c|c}6&504\\ \hline&\underset{―}{48}\\ &24\\ &\underset{―}{24}\\ \hline&0\end{array}$

1. $315÷5 = 63$
$\begin{array}{c|c}&63\\ \hline5&315\\ &\underset{―}{30}\\ &15\\ &\underset{―}{15}\\ \hline&0\end{array}$
2. $432÷9 = 48$
$\begin{array}{c|c}&48\\ \hline9&432\\ &\underset{―}{36（这里原表格4错误，应为36）}\\ &7（原表格后续相应修改基于正确计算，此步应为43 - 36 = 7，把2落下来成72 - 72 = 0 ，为符合原表格形式调整如下）}\\ &（修正计算呈现形式）\begin{array}{c}9&432\\ \hline&\underset{―}{36}\\ &72\\ &\underset{―}{72}\\ \hline&0\end{array}\\ \hline&0\end{array}$（为与题目格式一致，按原错误表格形式理解意图后规范答案为$\begin{array}{c|c}&48\\ \hline9&432\\ &\underset{―}{36}\\ &72\\ &\underset{―}{72}\\ \hline&0\end{array}$）
3. $504÷7 = 72$
$\begin{array}{c|c}&72\\ \hline7&504\\ &\underset{―}{49}\\ &14\\ &\underset{―}{14}\\ \hline&0\end{array}$
4. $315÷7 = 45$
$\begin{array}{c|c}&45\\ \hline7&315\\ &\underset{―}{28}\\ &35\\ &\underset{―}{35}\\ \hline&0\end{array}$
5. $432÷8 = 54$
$\begin{array}{c|c}&54\\ \hline8&432\\ &\underset{―}{40（原表格4错误，应为40）}\\ &32\\ &\underset{―}{32}\\ \hline&0\end{array}$（规范答案$\begin{array}{c|c}&54\\ \hline8&432\\ &\underset{―}{40}\\ &32\\ &\underset{―}{32}\\ \hline&0\end{array}$）
6. $504÷6 = 84$
$\begin{array}{c|c}&84\\ \hline6&504\\ &\underset{―}{48}\\ &24\\ &\underset{―}{24}\\ \hline&0\end{array}$

3. 榨 1 瓶橙汁需用 6 个橙子。228 个橙子可以榨多少瓶橙汁?

228÷6=38（瓶）
答：228个橙子可以榨38瓶橙汁。