÷２位数［商２～３位数］（型分け）

３位数÷２位数［商２位数］の型分け

この型の計算は、２位数÷２位数［商１位数］の複合となっていることに気づかせます。
（１）商の立てる位置を決め、
（２）《たてる》⇒《かける》⇒《ひく》⇒《おろす》の順番で計算を行い、
（３）退化型に進みます。
（\boxtimesは空位である場合を含みます。）

［１］ 問題
\setstretch{0.8} \begin{array}{rcc} \ &\ &\hspace{-0.2em}\square\square \\ \cline{2-3} \kern1em\square\square& \kern-0.6em {\big)} \kern0.1em & \hspace{-1em}\square\square\square \\ \ &\ &\hspace{-1.75em}\square\square \\ \cline{2-3} \ &\ &\hspace{-1em}\square\square\square \\ \ &\ &\hspace{-1em}\square\square\square \\ \cline{2-3} \ &\ &\hspace{-0.12em}\boxtimes\square \\ \end{array} \setstretch{0.8} \begin{array}{rcc} \cline{2-3} \kern1em27& \kern-0.6em {\big)} \kern0.1em & \hspace{-0.8em} 419 \\ \end{array}

\setstretch{0.8} \begin{array}{rcc} \cline{2-3} \kern1em27& \kern-0.6em {\big)} \kern0.1em & \hspace{-0.8em} 439 \\ \end{array}

\setstretch{0.8} \begin{array}{rcc} \cline{2-3} \kern1em48& \kern-0.6em {\big)} \kern0.1em & \hspace{-0.8em} 698 \\ \end{array}
［２］ 問題
\setstretch{0.8} \begin{array}{rcc} \ &\ &\hspace{-0.2em}\square\square \\ \cline{2-3} \kern1em\square\square& \kern-0.6em {\big)} \kern0.1em & \hspace{-1em}\square\square\square \\ \ &\ &\hspace{-1.75em}\square\square \\ \cline{2-3} \ &\ &\hspace{-1em}\square\square\square \\ \ &\ &\hspace{-1em}\square\square\square \\ \cline{2-3} \ &\ &\hspace{0.6em}0 \\ \end{array} \setstretch{0.8} \begin{array}{rcc} \cline{2-3} \kern1em27& \kern-0.6em {\big)} \kern0.1em & \hspace{-0.8em} 432 \\ \end{array}

\setstretch{0.8} \begin{array}{rcc} \cline{2-3} \kern1em36& \kern-0.6em {\big)} \kern0.1em & \hspace{-0.8em} 828 \\ \end{array}

\setstretch{0.8} \begin{array}{rcc} \cline{2-3} \kern1em23& \kern-0.6em {\big)} \kern0.1em & \hspace{-0.8em} 391 \\ \end{array}
［３］ 問題
\setstretch{0.8} \begin{array}{rcc} \ &\ &\hspace{-0.2em}\square\square \\ \cline{2-3} \kern1em\square\square& \kern-0.6em {\big)} \kern0.1em & \hspace{-1em}\square\square\square \\ \ &\ &\hspace{-1.75em}\square\square \\ \cline{2-3} \ &\ &\hspace{-1em}\square\square\square \\ \ &\ &\hspace{-0.2em}\square\square \\ \cline{2-3} \ &\ &\hspace{-0.2em}\boxtimes\square \\ \end{array} \setstretch{0.8} \begin{array}{rcc} \cline{2-3} \kern1em48& \kern-0.6em {\big)} \kern0.1em & \hspace{-0.8em} 598 \\ \end{array}

\setstretch{0.8} \begin{array}{rcc} \cline{2-3} \kern1em72& \kern-0.6em {\big)} \kern0.1em & \hspace{-0.8em} 857 \\ \end{array}

\setstretch{0.8} \begin{array}{rcc} \cline{2-3} \kern1em46& \kern-0.6em {\big)} \kern0.1em & \hspace{-0.8em} 561 \\ \end{array}
［４］［５］ 問題
\setstretch{0.8} \begin{array}{rcc} \ &\ &\hspace{-0.2em}\square\square \\ \cline{2-3} \kern1em\square\square& \kern-0.6em {\big)} \kern0.1em & \hspace{-1em}\square\square\square \\ \ &\ &\hspace{-1.75em}\square\square \\ \cline{2-3} \ &\ &\hspace{-0.2em}\square\square \\ \ &\ &\hspace{-0.2em}\square\square \\ \cline{2-3} \ &\ &\hspace{-0.2em}\boxtimes\boxtimes \\ \end{array} \setstretch{0.8} \begin{array}{rcc} \cline{2-3} \kern1em13& \kern-0.6em {\big)} \kern0.1em & \hspace{-0.8em} 324 \\ \end{array}

\setstretch{0.8} \begin{array}{rcc} \cline{2-3} \kern1em27& \kern-0.6em {\big)} \kern0.1em & \hspace{-0.8em} 338 \\ \end{array}

\setstretch{0.8} \begin{array}{rcc} \cline{2-3} \kern1em36& \kern-0.6em {\big)} \kern0.1em & \hspace{-0.8em} 768 \\ \end{array}
［６］退化 問題
\setstretch{0.9} \begin{array}{rcc} \ &\ &\hspace{-0.2em}\square\hspace{0.2em}0 \\ \cline{2-3} \kern1em\square\square& \kern-0.6em {\big)} \kern0.1em & \hspace{-1em}\square\square\square \\ \ &\ &\hspace{-1.75em}\square\square \\ \cline{2-3} \ &\ &\hspace{-0.2em}\square\square \\ \end{array} \setstretch{0.8} \begin{array}{rcc} \cline{2-3} \kern1em15& \kern-0.6em {\big)} \kern0.1em & \hspace{-0.8em} 912 \\ \end{array}

\setstretch{0.8} \begin{array}{rcc} \cline{2-3} \kern1em21& \kern-0.6em {\big)} \kern0.1em & \hspace{-0.8em} 853 \\ \end{array}

\setstretch{0.8} \begin{array}{rcc} \cline{2-3} \kern1em32& \kern-0.6em {\big)} \kern0.1em & \hspace{-0.8em} 981 \\ \end{array}
［７］退化 問題
\setstretch{0.9} \begin{array}{rcc} \ &\ &\hspace{-0.2em}\square\hspace{0.2em}0 \\ \cline{2-3} \kern1em\square\square& \kern-0.6em {\big)} \kern0.1em & \hspace{-1em}\square\square\square \\ \ &\ &\hspace{-1.75em}\square\square \\ \cline{2-3} \ &\ &\hspace{0.6em}\square \\ \end{array} \setstretch{0.8} \begin{array}{rcc} \cline{2-3} \kern1em15& \kern-0.6em {\big)} \kern0.1em & \hspace{-0.8em} 754 \\ \end{array}

\setstretch{0.8} \begin{array}{rcc} \cline{2-3} \kern1em32& \kern-0.6em {\big)} \kern0.1em & \hspace{-0.8em} 968 \\ \end{array}

\setstretch{0.8} \begin{array}{rcc} \cline{2-3} \kern1em21& \kern-0.6em {\big)} \kern0.1em & \hspace{-0.8em} 845 \\ \end{array}
［８］退化 問題
\setstretch{0.9} \begin{array}{rcc} \ &\ &\hspace{-0.2em}\square\hspace{0.2em}0 \\ \cline{2-3} \kern1em\square\square& \kern-0.6em {\big)} \kern0.1em & \hspace{-1em}\square\square\hspace{0.2em}0 \\ \ &\ &\hspace{-1.75em}\square\square \\ \cline{2-3} \ &\ &\hspace{0.8em}0 \\ \end{array} \setstretch{0.8} \begin{array}{rcc} \cline{2-3} \kern1em21& \kern-0.6em {\big)} \kern0.1em & \hspace{-0.8em} 840 \\ \end{array}

\setstretch{0.8} \begin{array}{rcc} \cline{2-3} \kern1em25& \kern-0.6em {\big)} \kern0.1em & \hspace{-0.8em} 750 \\ \end{array}

\setstretch{0.8} \begin{array}{rcc} \cline{2-3} \kern1em15& \kern-0.6em {\big)} \kern0.1em & \hspace{-0.8em} 900 \\ \end{array}


４位数÷２位数［商３位数］の型分け

この型が÷２位数の天王山です。これをマスターすることで、除数が多位数の計算にも対応できます。
４位数÷２位数が到達点となり、水源地型もこの計算の中に存在します。商が１位数の÷２位数の計算を、準素過程として捉えた場合、商が３位数になる水源地型は、準素過程の３段階の複合であることがわかります。
（１）準素過程の３段階の複合であることに気づかせ、
（２）《たてる》⇒《かける》⇒《ひく》⇒《おろす》の順番で計算を行い、
（３）退化型に進みます。
（\boxtimesは空位である場合を含みます。準素過程という名は当サイトの著者がつけた名称です。）

［１］水源地型 問題
\setstretch{0.8} \begin{array}{rcc} \ &\ &\hspace{-0.1em}\square\square\square \\ \cline{2-3} \kern1em\square\square& \kern-0.6em {\big)} \kern0.1em & \hspace{-1em}\square\square\square\square \\ \ &\ &\hspace{-2.5em}\square\square \\ \cline{2-3} \ &\ &\hspace{-1.8em}\square\square\square \\ \ &\ &\hspace{-1.8em}\square\square\square \\ \cline{2-3} \ &\ &\hspace{-0.16em}\square\square\square \\ \ &\ &\hspace{-0.16em}\square\square\square \\ \cline{2-3} \ &\ &\hspace{0.6em}\boxtimes\boxtimes\\ \end{array} \setstretch{0.8} \begin{array}{rcc} \cline{2-3} \kern1em63& \kern-0.6em {\big)} \kern0.1em & \hspace{-0.8em} 9895 \\ \end{array}

\setstretch{0.8} \begin{array}{rcc} \cline{2-3} \kern1em64& \kern-0.6em {\big)} \kern0.1em & \hspace{-0.8em} 8456 \\ \end{array}

\setstretch{0.8} \begin{array}{rcc} \cline{2-3} \kern1em66& \kern-0.6em {\big)} \kern0.1em & \hspace{-0.8em} 8979 \\ \end{array}
［２］ 問題
\setstretch{0.8} \begin{array}{rcc} \ &\ &\hspace{-0.1em}\square\square\square \\ \cline{2-3} \kern1em\square\square& \kern-0.6em {\big)} \kern0.1em & \hspace{-1em}\square\square\square\square \\ \ &\ &\hspace{-2.5em}\square\square \\ \cline{2-3} \ &\ &\hspace{-1.8em}\square\square\square \\ \ &\ &\hspace{-1.8em}\square\square\square \\ \cline{2-3} \ &\ &\hspace{-0.16em}\square\square\square \\ \ &\ &\hspace{0.6em}\square\square\\ \cline{2-3} \ &\ &\hspace{0.6em}\boxtimes\square \\ \end{array} \setstretch{0.8} \begin{array}{rcc} \cline{2-3} \kern1em37& \kern-0.6em {\big)} \kern0.1em & \hspace{-0.8em} 5290 \\ \end{array}

\setstretch{0.8} \begin{array}{rcc} \cline{2-3} \kern1em47& \kern-0.6em {\big)} \kern0.1em & \hspace{-0.8em} 4341 \\ \end{array}

\setstretch{0.8} \begin{array}{rcc} \cline{2-3} \kern1em97& \kern-0.6em {\big)} \kern0.1em & \hspace{-0.8em} 1081 \\ \end{array}
［３］ 問題
\setstretch{0.8} \begin{array}{rcc} \ &\ &\hspace{-0.1em}\square\square\square \\ \cline{2-3} \kern1em\square\square& \kern-0.6em {\big)} \kern0.1em & \hspace{-1em}\square\square\square\square \\ \ &\ &\hspace{-2.5em}\square\square \\ \cline{2-3} \ &\ &\hspace{-1.8em}\square\square\square \\ \ &\ &\hspace{-1.8em}\square\square\square \\ \cline{2-3} \ &\ &\hspace{0.6em}\square\square\\ \ &\ &\hspace{0.6em}\square\square\\ \cline{2-3} \ &\ &\hspace{0.6em}\boxtimes\boxtimes\\ \end{array} \setstretch{0.8} \begin{array}{rcc} \cline{2-3} \kern1em27& \kern-0.6em {\big)} \kern0.1em & \hspace{-0.8em} 4393 \\ \end{array}

\setstretch{0.8} \begin{array}{rcc} \cline{2-3} \kern1em23& \kern-0.6em {\big)} \kern0.1em & \hspace{-0.8em} 3950 \\ \end{array}

\setstretch{0.8} \begin{array}{rcc} \cline{2-3} \kern1em12& \kern-0.6em {\big)} \kern0.1em & \hspace{-0.8em} 3576 \\ \end{array}
［４］ 問題
\setstretch{0.8} \begin{array}{rcc} \ &\ &\hspace{-0.1em}\square\square\square \\ \cline{2-3} \kern1em\square\square& \kern-0.6em {\big)} \kern0.1em & \hspace{-1em}\square\square\square\square \\ \ &\ &\hspace{-2.5em}\square\square \\ \cline{2-3} \ &\ &\hspace{-1.8em}\square\square\square \\ \ &\ &\hspace{-1em}\square\square \\ \cline{2-3} \ &\ &\hspace{-0.16em}\square\square\square \\ \ &\ &\hspace{-0.16em}\square\square\square \\ \cline{2-3} \ &\ &\hspace{0.6em}\boxtimes\boxtimes\\ \end{array} \setstretch{0.8} \begin{array}{rcc} \cline{2-3} \kern1em89& \kern-0.6em {\big)} \kern0.1em & \hspace{-0.8em} 9718 \\ \end{array}

\setstretch{0.8} \begin{array}{rcc} \cline{2-3} \kern1em38& \kern-0.6em {\big)} \kern0.1em & \hspace{-0.8em} 8614 \\ \end{array}

\setstretch{0.8} \begin{array}{rcc} \cline{2-3} \kern1em46& \kern-0.6em {\big)} \kern0.1em & \hspace{-0.8em} 5710 \\ \end{array}
［５］ 問題
\setstretch{0.8} \begin{array}{rcc} \ &\ &\hspace{-0.1em}\square\square\square \\ \cline{2-3} \kern1em\square\square& \kern-0.6em {\big)} \kern0.1em & \hspace{-1em}\square\square\square\square \\ \ &\ &\hspace{-2.5em}\square\square \\ \cline{2-3} \ &\ &\hspace{-1.8em}\square\square\square \\ \ &\ &\hspace{-1em}\square\square \\ \cline{2-3} \ &\ &\hspace{-0.16em}\square\square\square \\ \ &\ &\hspace{0.6em}\square\square\\ \cline{2-3} \ &\ &\hspace{0.6em}\boxtimes\square\\ \end{array} \setstretch{0.8} \begin{array}{rcc} \cline{2-3} \kern1em48& \kern-0.6em {\big)} \kern0.1em & \hspace{-0.8em} 5901 \\ \end{array}

\setstretch{0.8} \begin{array}{rcc} \cline{2-3} \kern1em89& \kern-0.6em {\big)} \kern0.1em & \hspace{-0.8em} 9901 \\ \end{array}

\setstretch{0.8} \begin{array}{rcc} \cline{2-3} \kern1em89& \kern-0.6em {\big)} \kern0.1em & \hspace{-0.8em} 9903 \\ \end{array}
［６］ 問題
\setstretch{0.8} \begin{array}{rcc} \ &\ &\hspace{-0.1em}\square\square\square \\ \cline{2-3} \kern1em\square\square& \kern-0.6em {\big)} \kern0.1em & \hspace{-1em}\square\square\square\square \\ \ &\ &\hspace{-2.5em}\square\square \\ \cline{2-3} \ &\ &\hspace{-1.8em}\square\square\square \\ \ &\ &\hspace{-1em}\square\square \\ \cline{2-3} \ &\ &\hspace{0.6em}\square\square\\ \ &\ &\hspace{0.6em}\square\square\\ \cline{2-3} \ &\ &\hspace{0.6em}\boxtimes\square\\ \end{array} \setstretch{0.8} \begin{array}{rcc} \cline{2-3} \kern1em46& \kern-0.6em {\big)} \kern0.1em & \hspace{-0.8em} 5610 \\ \end{array}

\setstretch{0.8} \begin{array}{rcc} \cline{2-3} \kern1em16& \kern-0.6em {\big)} \kern0.1em & \hspace{-0.8em} 2605 \\ \end{array}

\setstretch{0.8} \begin{array}{rcc} \cline{2-3} \kern1em12& \kern-0.6em {\big)} \kern0.1em & \hspace{-0.8em} 4644 \\ \end{array}
［７］ 問題
\setstretch{0.8} \begin{array}{rcc} \ &\ &\hspace{-0.1em}\square\square\square \\ \cline{2-3} \kern1em\square\square& \kern-0.6em {\big)} \kern0.1em & \hspace{-1em}\square\square\square\square \\ \ &\ &\hspace{-2.5em}\square\square \\ \cline{2-3} \ &\ &\hspace{-1em}\square\square \\ \ &\ &\hspace{-1em}\square\square \\ \cline{2-3} \ &\ &\hspace{-0.16em}\square\square\square \\ \ &\ &\hspace{-0.16em}\square\square\square \\ \cline{2-3} \ &\ &\hspace{0.6em}\boxtimes\boxtimes\\ \end{array} \setstretch{0.8} \begin{array}{rcc} \cline{2-3} \kern1em13& \kern-0.6em {\big)} \kern0.1em & \hspace{-0.8em} 3249 \\ \end{array}

\setstretch{0.8} \begin{array}{rcc} \cline{2-3} \kern1em46& \kern-0.6em {\big)} \kern0.1em & \hspace{-0.8em} 9941 \\ \end{array}

\setstretch{0.8} \begin{array}{rcc} \cline{2-3} \kern1em37& \kern-0.6em {\big)} \kern0.1em & \hspace{-0.8em} 7918 \\ \end{array}
［８］ 問題
\setstretch{0.8} \begin{array}{rcc} \ &\ &\hspace{-0.1em}\square\square\square \\ \cline{2-3} \kern1em\square\square& \kern-0.6em {\big)} \kern0.1em & \hspace{-1em}\square\square\square\square \\ \ &\ &\hspace{-2.5em}\square\square \\ \cline{2-3} \ &\ &\hspace{-1em}\square\square \\ \ &\ &\hspace{-1em}\square\square \\ \cline{2-3} \ &\ &\hspace{0.6em}\square \square \\ \ &\ &\hspace{0.6em}\square \square \\ \cline{2-3} \ &\ &\hspace{0.6em}\boxtimes\boxtimes\\ \end{array} \setstretch{0.8} \begin{array}{rcc} \cline{2-3} \kern1em42& \kern-0.6em {\big)} \kern0.1em & \hspace{-0.8em} 8872 \\ \end{array}

\setstretch{0.8} \begin{array}{rcc} \cline{2-3} \kern1em13& \kern-0.6em {\big)} \kern0.1em & \hspace{-0.8em} 3141 \\ \end{array}

\setstretch{0.8} \begin{array}{rcc} \cline{2-3} \kern1em37& \kern-0.6em {\big)} \kern0.1em & \hspace{-0.8em} 7844 \\ \end{array}
［９］一次退化 問題
\setstretch{0.8} \begin{array}{rcc} \ &\ &\hspace{-0.1em}\square\square\square \\ \cline{2-3} \kern1em\square\square& \kern-0.6em {\big)} \kern0.1em & \hspace{-1em}\square\square\square\square \\ \ &\ &\hspace{-2.5em}\square\square \\ \cline{2-3} \ &\ &\hspace{-1.8em}\square\square\square \\ \ &\ &\hspace{-1.8em}\square\square\square \\ \cline{2-3} \ &\ &\hspace{0.6em}\boxtimes\square \\ \end{array} \setstretch{0.8} \begin{array}{rcc} \cline{2-3} \kern1em27& \kern-0.6em {\big)} \kern0.1em & \hspace{-0.8em} 4331 \\ \end{array}

\setstretch{0.8} \begin{array}{rcc} \cline{2-3} \kern1em37& \kern-0.6em {\big)} \kern0.1em & \hspace{-0.8em} 9273 \\ \end{array}

\setstretch{0.8} \begin{array}{rcc} \cline{2-3} \kern1em23& \kern-0.6em {\big)} \kern0.1em & \hspace{-0.8em} 3915 \\ \end{array}
［１０］一次退化 問題
\setstretch{0.8} \begin{array}{rcc} \ &\ &\hspace{-0.1em}\square\square\hspace{0.2em}0 \\ \cline{2-3} \kern1em\square\square& \kern-0.6em {\big)} \kern0.1em & \hspace{-1em}\square\square\square\hspace{0.2em}0 \\ \ &\ &\hspace{-2.5em}\square\square \\ \cline{2-3} \ &\ &\hspace{-1.8em}\square\square\square \\ \ &\ &\hspace{-1.8em}\square\square\square \\ \cline{2-3} \ &\ &\hspace{0.6em}\hspace{1em}0 \\ \end{array} \setstretch{0.8} \begin{array}{rcc} \cline{2-3} \kern1em27& \kern-0.6em {\big)} \kern0.1em & \hspace{-0.8em} 4320 \\ \end{array}

\setstretch{0.8} \begin{array}{rcc} \cline{2-3} \kern1em36& \kern-0.6em {\big)} \kern0.1em & \hspace{-0.8em} 8280 \\ \end{array}

\setstretch{0.8} \begin{array}{rcc} \cline{2-3} \kern1em23& \kern-0.6em {\big)} \kern0.1em & \hspace{-0.8em} 3910 \\ \end{array}
［１１］一次退化 問題
\setstretch{0.8} \begin{array}{rcc} \ &\ &\hspace{-0.1em}\square\square\square \\ \cline{2-3} \kern1em\square\square& \kern-0.6em {\big)} \kern0.1em & \hspace{-1em}\square\square\square\square \\ \ &\ &\hspace{-2.5em}\square\square \\ \cline{2-3} \ &\ &\hspace{-1.8em}\square\square\square \\ \ &\ &\hspace{-1em}\square\square \\ \cline{2-3} \ &\ &\hspace{0.6em}\square \square \\ \end{array} \setstretch{0.8} \begin{array}{rcc} \cline{2-3} \kern1em48& \kern-0.6em {\big)} \kern0.1em & \hspace{-0.8em} 5801 \\ \end{array}

\setstretch{0.8} \begin{array}{rcc} \cline{2-3} \kern1em49& \kern-0.6em {\big)} \kern0.1em & \hspace{-0.8em} 5907 \\ \end{array}

\setstretch{0.8} \begin{array}{rcc} \cline{2-3} \kern1em48& \kern-0.6em {\big)} \kern0.1em & \hspace{-0.8em} 5900 \\ \end{array}
［１２］一次退化 問題
\setstretch{0.8} \begin{array}{rcc} \ &\ &\hspace{-0.1em}\square\square\square \\ \cline{2-3} \kern1em\square\square& \kern-0.6em {\big)} \kern0.1em & \hspace{-1em}\square\square\square\square \\ \ &\ &\hspace{-2.5em}\square\square \\ \cline{2-3} \ &\ &\hspace{-1em}\square\square \\ \ &\ &\hspace{-1em}\square\square \\ \cline{2-3} \ &\ &\hspace{0.6em}\boxtimes\square \\ \end{array} \setstretch{0.8} \begin{array}{rcc} \cline{2-3} \kern1em42& \kern-0.6em {\big)} \kern0.1em & \hspace{-0.8em} 8832 \\ \end{array}

\setstretch{0.8} \begin{array}{rcc} \cline{2-3} \kern1em37& \kern-0.6em {\big)} \kern0.1em & \hspace{-0.8em} 7791 \\ \end{array}

\setstretch{0.8} \begin{array}{rcc} \cline{2-3} \kern1em15& \kern-0.6em {\big)} \kern0.1em & \hspace{-0.8em} 7651 \\ \end{array}
［１３］一次退化 問題
\setstretch{0.8} \begin{array}{rcc} \ &\ &\hspace{-0.1em}\square\square\hspace{0.2em}0 \\ \cline{2-3} \kern1em\square\square& \kern-0.6em {\big)} \kern0.1em & \hspace{-1em}\square\square\square\hspace{0.2em}0 \\ \ &\ &\hspace{-2.5em}\square\square \\ \cline{2-3} \ &\ &\hspace{-1em}\square\square \\ \ &\ &\hspace{-1em}\square\square \\ \cline{2-3} \ &\ &\hspace{1.5em}\hspace{0.2em}0 \\ \end{array} \setstretch{0.8} \begin{array}{rcc} \cline{2-3} \kern1em18& \kern-0.6em {\big)} \kern0.1em & \hspace{-0.8em} 3960 \\ \end{array}

\setstretch{0.8} \begin{array}{rcc} \cline{2-3} \kern1em27& \kern-0.6em {\big)} \kern0.1em & \hspace{-0.8em} 8370 \\ \end{array}

\setstretch{0.8} \begin{array}{rcc} \cline{2-3} \kern1em37& \kern-0.6em {\big)} \kern0.1em & \hspace{-0.8em} 8140 \\ \end{array}
［１４］一次退化 問題
\setstretch{0.8} \begin{array}{rcc} \ &\ &\hspace{-0.1em}\square\hspace{0.2em}0\square \\ \cline{2-3} \kern1em\square\square& \kern-0.6em {\big)} \kern0.1em & \hspace{-1em}\square\square\square\square \\ \ &\ &\hspace{-2.5em}\square\square \\ \cline{2-3} \ &\ &\hspace{-0.16em}\square\square\square \\ \ &\ &\hspace{-0.16em}\square\square\square \\ \cline{2-3} \ &\ &\hspace{0.6em}\boxtimes\square \\ \end{array} \setstretch{0.8} \begin{array}{rcc} \cline{2-3} \kern1em37& \kern-0.6em {\big)} \kern0.1em & \hspace{-0.8em} 7623 \\ \end{array}

\setstretch{0.8} \begin{array}{rcc} \cline{2-3} \kern1em43& \kern-0.6em {\big)} \kern0.1em & \hspace{-0.8em} 8731 \\ \end{array}

\setstretch{0.8} \begin{array}{rcc} \cline{2-3} \kern1em34& \kern-0.6em {\big)} \kern0.1em & \hspace{-0.8em} 6970 \\ \end{array}
［１５］一次退化 問題
\setstretch{0.8} \begin{array}{rcc} \ &\ &\hspace{-0.1em}\square\hspace{0.2em}0\square \\ \cline{2-3} \kern1em\square\square& \kern-0.6em {\big)} \kern0.1em & \hspace{-1em}\square\square\square\square \\ \ &\ &\hspace{-2.5em}\square\square \\ \cline{2-3} \ &\ &\hspace{-0.16em}\square\square\square \\ \ &\ &\hspace{0.6em}\square \square \\ \cline{2-3} \ &\ &\hspace{0.6em}\boxtimes\square \\ \end{array} \setstretch{0.8} \begin{array}{rcc} \cline{2-3} \kern1em48& \kern-0.6em {\big)} \kern0.1em & \hspace{-0.8em} 9713 \\ \end{array}

\setstretch{0.8} \begin{array}{rcc} \cline{2-3} \kern1em27& \kern-0.6em {\big)} \kern0.1em & \hspace{-0.8em} 8200 \\ \end{array}

\setstretch{0.8} \begin{array}{rcc} \cline{2-3} \kern1em18& \kern-0.6em {\big)} \kern0.1em & \hspace{-0.8em} 3701 \\ \end{array}
［１６］一次退化 問題
\setstretch{0.8} \begin{array}{rcc} \ &\ &\hspace{-0.1em}\square\hspace{0.2em}0\square \\ \cline{2-3} \kern1em\square\square& \kern-0.6em {\big)} \kern0.1em & \hspace{-1em}\square\square\square\square \\ \ &\ &\hspace{-2.5em}\square\square \\ \cline{2-3} \ &\ &\hspace{0.6em}\square \square \\ \ &\ &\hspace{0.6em}\square \square \\ \cline{2-3} \ &\ &\hspace{0.6em}\boxtimes\boxtimes\\ \end{array} \setstretch{0.8} \begin{array}{rcc} \cline{2-3} \kern1em15& \kern-0.6em {\big)} \kern0.1em & \hspace{-0.8em} 7551 \\ \end{array}

\setstretch{0.8} \begin{array}{rcc} \cline{2-3} \kern1em48& \kern-0.6em {\big)} \kern0.1em & \hspace{-0.8em} 9652 \\ \end{array}

\setstretch{0.8} \begin{array}{rcc} \cline{2-3} \kern1em15& \kern-0.6em {\big)} \kern0.1em & \hspace{-0.8em} 7545 \\ \end{array}
［１７］二次退化 問題
\setstretch{0.8} \begin{array}{rcc} \ &\ &\hspace{-0.1em}\square\hspace{0.2em}0\hspace{0.2em}0 \\ \cline{2-3} \kern1em\square\square& \kern-0.6em {\big)} \kern0.1em & \hspace{-1em}\square\square\square\square \\ \ &\ &\hspace{-2.5em}\square\square \\ \cline{2-3} \ &\ &\hspace{0.6em}\square \square \\ \end{array} \setstretch{0.8} \begin{array}{rcc} \cline{2-3} \kern1em32& \kern-0.6em {\big)} \kern0.1em & \hspace{-0.8em} 9623 \\ \end{array}

\setstretch{0.8} \begin{array}{rcc} \cline{2-3} \kern1em15& \kern-0.6em {\big)} \kern0.1em & \hspace{-0.8em} 6012 \\ \end{array}

\setstretch{0.8} \begin{array}{rcc} \cline{2-3} \kern1em43& \kern-0.6em {\big)} \kern0.1em & \hspace{-0.8em} 8629 \\ \end{array}
［１８］二次退化 問題
\setstretch{0.8} \begin{array}{rcc} \ &\ &\hspace{-0.1em}\square\hspace{0.2em}0\hspace{0.2em}0 \\ \cline{2-3} \kern1em\square\square& \kern-0.6em {\big)} \kern0.1em & \hspace{-1em}\square\square\hspace{0.2em}0\square \\ \ &\ &\hspace{-2.5em}\square\square \\ \cline{2-3} \ &\ &\hspace{1.4em}\square \\ \end{array} \setstretch{0.8} \begin{array}{rcc} \cline{2-3} \kern1em32& \kern-0.6em {\big)} \kern0.1em & \hspace{-0.8em} 9602 \\ \end{array}

\setstretch{0.9} \begin{array}{rcc} \cline{2-3} \kern1em15& \kern-0.6em {\big)} \kern0.1em & \hspace{-0.8em} 6002 \\ \end{array}

\setstretch{0.9} \begin{array}{rcc} \cline{2-3} \kern1em15& \kern-0.6em {\big)} \kern0.1em & \hspace{-0.8em} 7508 \\ \end{array}
［１９］二次退化 問題
\setstretch{0.8} \begin{array}{rcc} \ &\ &\hspace{-0.1em}\square\hspace{0.2em}0\hspace{0.2em}0 \\ \cline{2-3} \kern1em\square\square& \kern-0.6em {\big)} \kern0.1em & \hspace{-1em}\square\square\hspace{0.2em}0\hspace{0.2em}0 \\ \ &\ &\hspace{-2.5em}\square\square \\ \cline{2-3} \ &\ &\hspace{1.4em}\hspace{0.2em}0 \\ \end{array} \setstretch{0.8} \begin{array}{rcc} \cline{2-3} \kern1em21& \kern-0.6em {\big)} \kern0.1em & \hspace{-0.8em} 8400 \\ \end{array}

\setstretch{0.9} \begin{array}{rcc} \cline{2-3} \kern1em25& \kern-0.6em {\big)} \kern0.1em & \hspace{-0.8em} 7500 \\ \end{array}

\setstretch{0.9} \begin{array}{rcc} \cline{2-3} \kern1em32& \kern-0.6em {\big)} \kern0.1em & \hspace{-0.8em} 9600 \\ \end{array}