Question

Determine o valor de cada expressão:

A) 1000-[(2.4-6) + (2+6.4)]
B) 60+2. {[4. (6+2) -10] +12}
C) [(4+16.2).5 -10] .100
D) {10+[5. (4+2.5) -8] .2} -100
E) 80-5 . (28-6.4) + 6 - 3 .4
(Cálculos, por favor.)

Answer 1

Olá,

Vamos lá,

A) 1000-[(2.4-6) + (2+6.4)]
=1000-[(8-6) + (2+24)]
=1000-[ 2 + 26]
=1000 - 28
= 972

B) 60+2. {[4. (6+2) -10] +12}
=60+2. {[4. (8) -10] +12}
=60+2. {[ 32 -10] +12}
=60+2. {[ 22] +12}
=60+2. { 34}
= 60 + 68
= 128


C) [(4+16.2).5 -10] .100
=[(4+32).5 -10] .100
=[(36).5 -10] .100
=[ 180 -10] .100
= 170 .100
= 17.000


D) {10+[5. (4+2.5) -8] .2} -100
= {10+[5. (4+10) -8] .2} -100
= {10+[5. (14) -8] .2} -100
= {10+[70 -8] .2} -100
= {10+ 62 .2} -100
= {10+ 124} -100
={ 134} - 100
= 34


E) 80-5 . (28-6.4) + 6 - 3 .4

=80-5 . (28-24) + 6 - 12
=80-5 . (4) + 6 - 12
=80-20 + 6 - 12
= 54