Question

помогите пожалуйста, очень срочно! ​

Answer 1

1)

$\dfrac{1}{4}\cdot\dfrac{25}{25}=\dfrac{25}{100}=0.25\\\\2\dfrac{7}{20}=\dfrac{47}{20}\cdot\dfrac{5}{5}=\dfrac{235}{100}=2.35\\\\5\dfrac{3}{8}=\dfrac{43}{8}\cdot\dfrac{125}{125}=\dfrac{5375}{1000}=5.375\\\\12\dfrac{2}{5}=\dfrac{62}{5}\cdot\dfrac{2}{2}=\dfrac{124}{10}=12.4\\\\9\dfrac{1}{8}=\dfrac{73}{8}\cdot{125}{125}=\dfrac{9125}{1000}=9.125$

2)

$25.8=\dfrac{258}{10}\div\dfrac{2}{2}=\dfrac{129}{5}\\\\13.6=\dfrac{136}{10}\div\dfrac{2}{2}=\dfrac{68}{5}\\\\1.25=\dfrac{125}{100}\div\dfrac{25}{25}=\dfrac{5}{4}\\\\9.375=\dfrac{9375}{1000}\div\dfrac{125}{125}=\dfrac{75}{8}\\\\11.75=\dfrac{1175}{100}\div\dfrac{25}{25}=\dfrac{47}{4}\\\\0.125=\dfrac{125}{1000}\div\dfrac{125}{125}=\dfrac{1}{8}$