Вариант 1. 1. Сократите дроби: 45/81; 36/72; 50/250; 14/56; 300/9000.

1. \(\dfrac{45}{81}=\dfrac{45:9}{81:9}=\dfrac{5}{9}\).
2. \(\dfrac{36}{72}=\dfrac{36:36}{72:36}=\dfrac{1}{2}\).
3. \(\dfrac{50}{250}=\dfrac{50:50}{250:50}=\dfrac{1}{5}\).
4. \(\dfrac{14}{56}=\dfrac{14:14}{56:14}=\dfrac{1}{4}\).
5. \(\dfrac{300}{9000}=\dfrac{300:300}{9000:300}=\dfrac{1}{30}\).

Ответ: \(\dfrac{5}{9};\ \dfrac{1}{2};\ \dfrac{1}{5};\ \dfrac{1}{4};\ \dfrac{1}{30}\).