Question

Calcule o valor das expressões
A) (12+2.5)-8=
B) 25-(15+6:3)=
C) 25+[7+(8-4:2)]=
D) 60-[8+(10-2):2]=
E) 80-[22+(5.2+1)+6]=
F) 14:2+[13-(4.2+1)]=

Answer 1

a) (12+10)-8=
22-8= 14

b) 25- (15+2)=
25-17= 8

c) 25+[7+(8-7)]
25+[7+1]
25+8= 33

d) 60- [8+(8):2]
60- [8+4]
60-12=48

e)80-[22+(5.2+1)+6=
80- [22+(10+1)+6=
80-[22+11]+6=
80-33+6=
47+6= 53

f) 14:2+[13-(4.2+1)=
14:2+[13-(8+1)=
14:2+[13-9]=
14:2+4=
7+4= 11

Answer 2

A) (12+2.5)-8=
     (12+10)-8=
          22-8=
            14
B)25-(15+6:3)=
   25-(15+2)=
   25-17=
     8
C)25+[7+(8-4:2)]=
   25+[7+(8-2)]=
   25+[7+6]=
   25+13=
     38
D)60-[8+(10-2):2]=
   60-[8+8:2]=
    60-[8+4]=
    60-12=
       48
E)80-[22+(5.2+1)+6]=
   80-[22+(10+1)+6]=
   80-[22+11+6]=
   80-39=
     41
F)14:2+[13-(4.2+1)]=
   14:2+[13-(8+1)]=
   14:2+[13-9)]=
   14:2+4=
   7+4=
    11