Question

запишите в виде десяти ной дроби 1/4, 2/5,3/20​

Answer 1

$\frac{1}{4} = \frac{1 \times 25}{4 \times 25} = \frac{25}{100} = 0.25 \\ \frac{2}{5} = \frac{2 \times 2}{5 \times 2} = \frac{4}{10} = 0.4 \\ \frac{3}{20} = \frac{3 \times 5}{20 \times 5} = \frac{15}{100} = 0.15$