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～数学中学3年生クイズ～

ルートの足し算,引き算/数学中学3年生・一般常識クイズ一問一答問題まとめ

問題

\( \begin{array}{l} ①\sqrt{2}+2\sqrt{2}= \end{array} \)

\( \begin{array}{l} ②5\sqrt{3}-2\sqrt{3}= \end{array} \)

\( \begin{array}{l}③\begin{aligned}\sqrt{2}+\sqrt{8}=\end{aligned} \end{array} \)

\( \begin{array}{l} ④\begin{aligned}\sqrt{12}-\sqrt{3}=\end{aligned} \end{array} \)

解答

\( \begin{array}{l} ①\sqrt{2}+2\sqrt{2}=3\sqrt{2} \end{array} \)

\( \begin{array}{l} ②5\sqrt{3}-2\sqrt{3}=3\sqrt{3} \end{array} \)

\( \begin{array}{l}③\begin{aligned}\sqrt{2}+\sqrt{8}=\sqrt{2}+2\sqrt{2} =3\sqrt{2}\end{aligned} \end{array} \)

\( \begin{array}{l} ④\begin{aligned}\sqrt{12}-\sqrt{3}=2\sqrt{3}-\sqrt{3}=\sqrt{3}\end{aligned} \end{array} \)