\(\boxed{\text{301\ (301).}\text{\ }\text{Еуроки\ -\ ДЗ\ без\ мороки}}\)
Пояснение.
Решение.
\[\textbf{а)}\ \sqrt{900} = 30\]
\[\textbf{б)}\ \sqrt{0,01} = 0,1\]
\[\textbf{в)}\ \sqrt{0,64} = 0,8\]
\[\textbf{г)}\sqrt{\frac{121}{64}} = \frac{11}{8} = 1\frac{3}{8}\]
\[\textbf{д)}\ \sqrt{6\frac{1}{4}} = \sqrt{\frac{121}{4}} = \frac{5}{2} = 2,5\]