Respostas
Resposta:
6.
a) 31+(-40):(+2)
31-20
9
b) -10-20:(+4)
-10-20:+4
-10-5
-15
c) (+30):(-6)+(-18):(+3)
-5-6
-11
d) 7:(-7)+2.(-6)+11
7:-7+2.-6+11
-1-12+11
-2
e) (-36):(-4)+3.(-3)
+9+3.-3
+9-9
0
f) 35-6.(+6)+(+54):(-6)
35-6.+6-9
35-36-9
-10
g) 2+(-75):(-5)-4.(-1)
2+15-4.-1
2+15+4
21
h) 4.(-20)-(-120):(+2)+28:(-7)
4.-20+60+28:-7
-80+60-4
-24
7.
a) (-9)^2-(+5).(+16)
81-80
1
b) (-2)^4:(+16).(-1)^7
16:16.-1
1.-1
-1
c) (-6)^2-(-7)^2+13^0
64-49+1
16
d)5^2-(-3)^3+(-4)^2
25+27+16
68
e)4.(-5)^3+(-20)^2
4.-125+400
-500+400
-100
f) 11^2-4.(-5)^2-(-5)^2+10^0
121-4.25+25+1
121-100+25+1
5
g) 17-3.(-2)^2-(-6)^2-(-1)^7
17-3.4-36+1
17-12-36+1
-30
h)7.(-2)^2-5.(-2)^3-10^2
7.4-5.-8-100
28+50-100
-22
Diferença do maior número e do menor número: 168
8. 1-(-`100)
1+10
11
9. x = `81:(4^2-5^2)
9:-9
-1
10. `3600:`25
60:5
12
11.
a) A:B
A = (-7-4).(-9+2)-(-72+13)
-11.-7+59
77+59
136
B = (-5-5)+(-9-4+6)
-10-7
-17
A:B = 136:-17 = -8
b) A-B
A = (-9-3):(-1+7)
-12:6
-2
B = [10-(-4-3)].(-2)^3
[10+7].-8
17.-8
-136
A-B = -2+136 = 134
c) (A-B)^2
A = (-50):(-5-5).(-5)
-50:-10.-5
5.-5
-25
B = [(-8):(+2)-7-(-1)].5
[-4-7+1].5
-10.5
-50
(A-B)^2 = (-25-50)^2 = (-75)^2 = 5625
Boa sorte!