Question

PRA AMANHÃ

1)Elimine os parênteses:
A)-(15)=
B)-(-2)=
C)-(+4)=
D)-(-7)=
E)-(+12)=
F)-(-15)=
G)-(-42)=
H)-(+56)=

2)Calcule:
A)7-(+2)=
B)7-(12)=
C)2-(-9)=
D)-5-(-1)=
E)-5-(+1)=
F)-4-(+3)=
G)7-(-5)=
H)8-(+4)=

3)Calcule:
A)(+7)-(+3)=
B)(15)-(-2)=
C)(-3)-(+8)=
D)(+4)-(+4)=

4)Calcule:

A)(-4)-(-2)+(-6)=
B)(-7)-(-5)+(-8)=
C)(+7)-(-6)-(-8)=
D)(-8)+(-6)-(+3)=
E)5-(-5)-(-3)+0-6=
F)-25(-5)-30=

Answer 1

1)Elimine os parênteses:

A)-(15)=-15

B)-(-2)=+2

C)-(+4)=-4

D)-(-7)=+7

E)-(+12)=-12

F)-(-15)=+15

G)-(-42)=+42

H)-(+56)=-56

2)Calcule:

A)7-(+2)=7-2=5

B)7-(12)=7-12=-5

C)2-(-9)=2+9=11

D)-5-(-1)=-5+1=-4

E)-5-(+1)=-5-1=-6

F)-4-(+3)=-4-3=-7

G)7-(-5)=7+5=12

H)8-(+4)=8-4=4

3)Calcule:

A)(+7)-(+3)=7-3=4

B)(15)-(-2)=15+2=17

C)(-3)-(+8)=-3-8=-11

D)(+4)-(+4)=4-4=0

4)Calcule:

A)(-4)-(-2)+(-6)=-4+2-6=-8

B)(-7)-(-5)+(-8)=-7+5-8=-10

C)(+7)-(-6)-(-8)=7+6+8=21

D)(-8)+(-6)-(+3)=-8-6-3=-17

E)5-(-5)-(-3)+0-6=5+5+3+0-6=7

F)-25(-5)-30= 125-30=95