Question

10) Calcule o valor das expressões:
a) 7- (1+3)
b) 9-(5-1 + 2)
c) 10- (2+ 5) + 4
1) (10-4)-(9-8) + 3
g) 50 - (37 - ( 15-8) ]
h) 28+ [ 50 - (24-2) - 101
i) 20 + (13+ ( 10 - 6) + 4]
1) 52 - {12+ [15-(8-4)]}
d) (13-7)+8-1
e) 15- (3+2) - 6
11) Calcule o valor das expressões:
a) 25+ {12+ [2-(8-6)]+2}
b) {[(18-3) + (7 + 5) - 2] + 5) - 12
c) 65 - { 30 - [ 20 ( 10 -1 + 6 ) + 1 ]}
d) 45+ { 15-[( 10-8 ) + (7-4) -3]-4}
e) 40 + { 50 - [ 35 - ( 25 + 5) - 1]} + 7
f) 38 - {20 - [ 22-( 5+ 3) + ( 7 - 4 + 1 0]}
g) 26 + { 12-[(30 - 18 ) + ( 4-1)-6)-1}
​

Answer 1

A) 7- 4 =
3

B) 9- 6=
3

C) 10-7+4=
10-11=
1

1) 6-1+3=
6-4=
2

G) 50-[37-7]=
50-30=
20

H) 28+[50-22-101]=
28+[50-123]=
28+(-73)=
45

I)20+[13+4+4]=
20+21=
41

1) 52-{12+[15-4]}=
52-{12+11]=
52-23=
29

D)6+8-1=
13

E)15-5-6=
15-11=
4

11)
A)25+{12+[2-2]+2}=
25+{12+2}=
25+14=
39

B) {[15+12-2]+5}-12=
{25+5}-12=
30-12=
18

C) 65-{30-[20+15+1]}=
65-{30-36}=
65-6=
59

D) 45+{15-[2+3-3]-4}=
45+{15-2]-4}=
45+13-4=
45+9=
54

E)40+{50-[35-20-1]}+7=
40+{50-[24]}+7=
40+34+7=
81

F) 38-{20-[22-8+7]}=
38-{20-21}=
38- 1=
37

G) 26+{12-[12+3-6]-1}=
26+{12-9-1}=
26+2=
28