Câu 1: Trang 136 sách giáo khoa (SGK) toán tiếng Anh lớp 4Calculate then simplifyTính rồi rút gọna)...

{
"content1": "a) \(\frac{3}{5}\) : \(\frac{3}{4}\) = \(\frac{3}{5}\) x \(\frac{4}{3}\) = \(\frac{12}{15}\) = \(\frac{4}{5}\)",
"content2": "a) \(\frac{2}{5}\) : \(\frac{3}{10}\) = \(\frac{2}{5}\) x \(\frac{10}{3}\) = \(\frac{20}{15}\) = \(\frac{4}{3}\)",
"content3": "a) \(\frac{9}{8}\) : \(\frac{3}{4}\) = \(\frac{9}{8}\) x \(\frac{4}{3}\) = \(\frac{36}{24}\) = \(\frac{3}{2}\)",
"content4": "b) \(\frac{1}{4}\) : \(\frac{1}{2}\) = \(\frac{1}{4}\) x \(\frac{2}{1}\) = \(\frac{2}{4}\) = \(\frac{1}{2}\)",
"content5": "b) \(\frac{1}{8}\) : \(\frac{1}{6}\) = \(\frac{1}{8}\) x \(\frac{6}{1}\) = \(\frac{6}{8}\) = \(\frac{3}{4}\)",
"content6": "b) \(\frac{1}{5}\) : \(\frac{1}{10}\) = \(\frac{1}{5}\) x \(\frac{10}{1}\) = \(\frac{10}{5}\) = \(\frac{2}{1}\)"
}