Question

1. Efetue as expressões numéricas:
a) 2 +4-2=
b) 2. {3+ 1 [5 - 4. (3. 2)] - 8 }=
c)-2 + 6 - 10-(2)2 =
d) { 38 +[( 143 : 11 + 7)-5.2]}: 6 =
e) 2. [(5-2).(3 + 2.7)] -2 =
) (8 + 6.8:4) + [3 + 15:5 +5]
$=$
​

Answer 1

Resposta:

a)2+4=6-2=4

b)2.(3+1[1.(6)]-8)=2.4[1.6]-8)=8.6-8=48-8=40

c)4-10-4=-6-4=-10

d)(38+[(13+7)-10]):6=(38+[20-10]:6=38+10:6=48:6=8

e)2.[(3).(17)]-2=2.[51]-2=102-2=100

f)(8+6.2)+(3+3+5)=(8+12)+(3+8)=20+11=31