Chapter 3 - Adding and Subtracting Fractions - 3.5 Order Relation and the Order of Operations - 3.5 Exercises - Page 244: 48

$\frac{1}{100}$

$(\frac{5}{8})^{2} \times (\frac{4}{25})^{2}$ = $\frac{5}{8} \times \frac{5}{8} \times\frac{4}{25} \times \frac{4}{25}$ = $\frac{1}{2} \times \frac{1}{2} \times\frac{1}{5} \times \frac{1}{5}$ = $\frac{1}{100}$