[tex] - 3.4 \times 2.7 = -9 .18[/tex]

[tex] - 0.45 \times ( - 2.4 )= 1.08[/tex]

[tex] \frac{11}{14} \times ( - \frac{21}{44} ) = - \frac{11 \times 21}{14 \times 44} = \frac{3}{2 \times 4} = \frac{3}{8} [/tex]

[tex] -1 8 \div ( - 4) = 2.5[/tex]

[tex] - 24 \div ( - \frac{8}{11} ) = \frac{24 \times 11}{8} = 3 \times 11 = 33[/tex]

[tex] - 4 \frac{2}{7} \div 3 \frac{3}{14} = - \frac{30 \times 14}{7 \times 45} = - \frac{2 \times 2}{3} = \\ - \frac{4}{3} = - 1 \frac{1}{3} [/tex]