a)  $5.4^{2}-18:3^{2}$

=  $5.16 - 18 : 9$

=  $90 - 2 = 88$

Vậy $5.4^{2}-18:3^{2}=88$

b)  $3^{3}.18 - 3^{3}.12$

=   $3^{3}.(18-12)$

=   $3^{3}. 6$

=  $27.6 = 162$.

Vậy  $3^{3}.18 - 3^{3}.12=162$

c)   $39.213 + 87.39$      

=  $39. ( 213 + 87 )$

=  $39. 300 = 11700$

Vậy $39.213 + 87.39 = 11700$

d)  $80 – [130 – (12 - 4)^{2}]$

=  $80 – [130 – 8^{2}]$

=  $80 – [130 – 64]$

=  $80 – 66 = 14$

Vậy $80 – [130 – (12 - 4)^{2}]=14$