Question

a) 1000 - [(2.4-6) +(2+6.4)
b) 60+ 2. {[ 4.(6+2) - 101 +12)
c) [( 4 + 16.2).5 - 101. 100 =
d) {10+ [5. (4+2.5) - 8).2) - 100
e) 80-5. (28 -6.4)+ 6-3.4
f) 4.(10 + 20+ 15 + 30) =​

Answer 1

Explicação passo-a-passo:

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 - 101. 100 =

[(4+16.2).5-10].100

[(4+32).5-10].100

[36.5-10].100

(180-10).100

170.100

=17000

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

f) 4.(10 + 20+ 15 + 30) =​

4x(10+20+15+30)=

4x(75)=

300