列坚式计算。
(1) $306 \div 3$
(2) $945 \div 5$
(3) $25 \times 24$
(4) $68 \times 79$
答案】 (1) $306 \div 3=102$

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(2) $945 \div 5=189$

$5 \longdiv { 1 8 9 }$

\begin{tabular}{l}
5 \\
\hline 44
\end{tabular}

$\begin{array}{r}40 \\ \hline 45\end{array}$

\begin{tabular}{r}
45 \\
\hline 0
\end{tabular}

(3) $25 \times 24=600$

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(4) $68 \times 79=5372$

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