Question

1) Calcule as expressões:

a) 7 – ( 1 + 3) =

b) 9 – ( 5 – 1 + 2) =

c) 10 – ( 2 + 5 ) + 4 =

d) ( 13 – 7 ) + 8 – 1 =

e) 15 – ( 3 + 2) – 6 =

f) ( 10 – 4 ) – ( 9 -8) + 3 =

g) 50 – [ 37 – ( 15 – 8 ) ] =

h) 28 + [50 – (24 – 2) -10 ] =

i) 20 + [ 13 + (10 – 6) + 4] =

j) 52 – { 12 + [ 15 – ( 8 – 4)]} =

l) 25 + { 12 + [ 2 – ( 8 – 6 ) + 2 ]} =

m) { [ ( 18 – 3 ) + ( 7 + 5) – 2 ] + 5 } – 12 =

n) 65 – { 30 – [ 20 – ( 10 – 1 + 6) + 1 ]} =​

Answer 1

Resposta:

A)7-(1+3)

7-4= 3

B) 9-(5-1+2)

9-6= 1

C)10-(2+5)+4

10-7+4= 7

C)(13-7)8-1

6+8-1=13