4) \(16-\left(-\frac{1}{2}\right)\cdot16+\left(-\frac{1}{2}\right)\cdot16:\left(-\frac{1}{2}\right);\ 16:\left(-\frac{1}{2}\right)\).

\(16-\left(-\frac12\right)\cdot16=16-(-8)=24\).

\(\left(-\frac12\right)\cdot16:\left(-\frac12\right)=(-8):\left(-\frac12\right)=16\).

\(16:\left(-\frac12\right)=-32\).

Ответ: 24; 16; −32.