6. Блок 1: 1/4 − 3/25. Блок 2: 6/5 : 4/11. Блок 3: (5/22 − 8/11) · 11/5.

Блок 1: \(\frac14-\frac3{25}=\frac{25-12}{100}=\frac{13}{100}\).

Блок 2: \(\frac65:\frac4{11}=\frac65\cdot\frac{11}{4}=\frac{33}{10}\).

Блок 3: \(\left(\frac5{22}-\frac8{11}\right)\cdot\frac{11}{5}=\left(\frac5{22}-\frac{16}{22}\right)\cdot\frac{11}{5}=-\frac{11}{10}\).

Ответ: \(\frac{13}{100};\ \frac{33}{10};\ -\frac{11}{10}\).