1) calcule as subtraçoes: a) (+9)-(-6)=
b)(-10)-(+3)=
c)(-8)-(-9)=
d)(+8)-(+12)=
e)(-5)-(-7)=
f)(+15)-(-8)=
2)calcule o valor de cada expressão abaixo:
a) -(+1)+(-10)-(-7)+(+11)=
b)(-2)-(-6)-(+1)+(+5)=
c)(+8)-(+10)-(-3)+(+2)+(-4)=
d)(+5)-(+2-6)+(+4)=
b)(-10)-(+3)=
c)(-8)-(-9)=
d)(+8)-(+12)=
e)(-5)-(-7)=
f)(+15)-(-8)=
2)calcule o valor de cada expressão abaixo:
a) -(+1)+(-10)-(-7)+(+11)=
b)(-2)-(-6)-(+1)+(+5)=
c)(+8)-(+10)-(-3)+(+2)+(-4)=
d)(+5)-(+2-6)+(+4)=