Question 3: Calculate the expression value: \( B = {2^3} + 3. {\left( {\frac{1}{9}} \right)^0} – {2^{ – 2}} .4 + \left[ {{{\left( { – 2} \right)}^2}:\frac{1}{2}} \right].8\)

\(\begin{array}{*{20}{l}} {B = {2^3} + 3. {{\left( {\frac{1}{9}} \right)}^0} – {2^{ – 2}}.4 + \left[ {{{\left( { – 2} \right)}^2}:\frac{1}{2}} \right].8}\\ { = 8 + 3.1 – \frac{1}{4}.4 + \left( {4:\frac{1}{2}} \right).8}\\ { = 10 + 64 = 74} \end{array}\)