分数の掛け算/小学校6年生相当の算数/一般常識クイズ一問一答問題まとめ
問題
①\( \begin{array}{l}\dfrac{3}{4}\times 5 \end{array} \)
②\( \begin{array}{l}\dfrac{2}{3}\times \dfrac{4}{5} \end{array} \)
③\( \begin{array}{l} \dfrac{2}{9}\times \dfrac{5}{3} \end{array} \)
④\( \begin{array}{l}\dfrac{8}{7}\times 14 \end{array} \)
⑤\( \begin{array}{l}\dfrac{11}{10}\times \dfrac{5}{2} \end{array} \)
⑥\( \begin{array}{l}\dfrac{5}{6}\times \dfrac{12}{15} \end{array} \)
解答
①\( \begin{array}{l}\dfrac{3}{4}\times 5=\dfrac{15}{4}=3\dfrac{3}{4} \end{array} \)
②\( \begin{array}{l}\dfrac{2}{3}\times \dfrac{4}{5}=\dfrac{8}{15} \end{array} \)
③\( \begin{array}{l} \dfrac{2}{9}\times \dfrac{5}{3}=\dfrac{10}{27} \end{array} \)
④\( \begin{array}{l}\dfrac{8}{7}\times 14=8\times 2=16 \end{array} \)
⑤\( \begin{array}{l}\dfrac{11}{10}\times \dfrac{5}{2}=\dfrac{11}{4}=2\dfrac{3}{4} \end{array} \)
⑥\( \begin{array}{l}\dfrac{5}{6}\times \dfrac{12}{15}=\dfrac{1\times 2}{1\times 3}=\dfrac{2}{3} \end{array} \)