25 и 27 задания, осталось 15 минут

$25)8.2 \div 0.2 - 2.75 \div 5.5 - 18.25 = 82 \div 2 - 27.5 \div 55 - 18.25 = 41 - 0.5 - 18.25 = 41 - 18.75 = 22.25 = \frac{89}{4}$

$13 \frac{5}{18} - (9 \frac{13}{36} + 2 \frac{5}{8} ) = 13 \frac{5}{18} - (9 \frac{26}{72} + 2 \frac{45}{72} ) = 13 \frac{5}{18} - 11 \frac{71}{72} = 13 \frac{20}{72} - 11 \frac{71}{72} = 12 \frac{92}{72} - 11 \frac{71}{72} = 1 \frac{21}{72} = 1 \frac{7}{24}$

Ответ: 25) 3 ; 27) 2