Respuesta :

G/4.3 idk if this is correct
to add 2.5 and 1.8 start by writing the numbers one over the other.
  2.5
+1.8

Then add. 
8+5 = 13. put the 3 behind the decimal and carry the one over to the 2
2+1+1= 4
so the answer is 4.3