Question

1 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

(12+2.5)-8=(12+10) -8=0 22-8=14

Answer 2

Resposta:

a: 14

b: 425

c: 38

d: 48

e: 55

f: 22

Explicação passo-a-passo:

a: (12+2.5)-8=

(12+10)-8=

22-8=

14

b: 25.(15+6:3)

25.(15+2)=

25.17=

425

c: 25+[7+(8-4:2)=

25+(7+8-2)=

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+9)+6=

80-31+6=

55

f: 14:2+[13-4.2+1)]=

7+(13-8+1) =

22