4.
计算:
\((1)-2 \dfrac {2}{3}×(- \dfrac {1}{4})+ \dfrac {5}{9}÷(-1 \dfrac {2}{3})\)
\((2) \dfrac {2}{3}×(-9)-36×( \dfrac {5}{9}- \dfrac {3}{4}+ \dfrac {1}{12})\)
\((3)(-2)^{3}×(- \dfrac {1}{2})^{2}+(- \dfrac {3}{2})^{2}÷(- \dfrac {3}{4})\)
\((4)40^{\circ}26′+30^{\circ}30′÷6\)