Ficha nº4 -Adição e subtração de nºs inteiros relativos

1-Calcula:

a)(-2) + (-3)=                                                    b)(-5)+ (+3)=                                    c)(-3) –(+3)=

d)(+3) + (+4)=                                                  e)(+4) + (-2)=                                   f)(-5) – (-8)=

g)(-7) + (+7)=                                                   h)-500 + (+600)=                             i)-(-500) + (-800)=

2)Calcula:

a)-5 + (-6)=                                                        b)-10 + (-830)=                                 c)(+25) + (+15)=

d)(+12) + (+24)=                                             e)(+17) + (-17)=                                              f)(+18) + (-14)=

g)(-18) + (+14)=                                                              h)(+253) + (-512)=                          i)(+5)+(+3)=

3)Calcula:

a)(+5)+(-7)+(-3)+(+12)+(-5)+0+(-10)=                                  b)(+3)+(+5)+(+6)=

c)(-5)+(-7)+(-2)=                                                                            d)(+9)+(-5)+(+3)=

e)(+22)+(-10)+(-15)=                                                                   f)(-21)+(+13)+(-4)=

g)(-22)+(-9)+(+22)=                                                                      h)(+2)+(-5)+(+4)+(+2)+(-3)=

i)(-8)+(-3)+(+12)+(-4)+(+7)=                                                     j)(-3)+(+7)+(-13)+(-7)+(+8)=

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

Subtração

4)Calcula:

a)(-3)-(+5)=                                       b)(+7)-(-2)=                                      c)(-15)-(+12)=

d)(+11)-(-14)=                                  e)(-17)-(-12)=                                   f)(-13)-(+13)=

g)(+11)-(-5)=                                    h)(+11)-0=                                         i)(-17)-(-14)=

j)(+12)-(-15)=

5)Transforme as somas algébricas em adições sucessivas e determine o seu valor:

a)(+7)+(-3)-(+5)+(+4)-(-5)=                       b)(+11)-(+7)-(-5)+(-12)+(-15)=

c)(-3)+(-5)-(+3)+(+2)-(-5)=                         d)(+5)-(-2)+(-5)-(-7)-(+3)=

e)(-2)-(-7)-(+2)-(+5)-(-6)=                          f)(-3)-(+5)-(-8)+(-15)-(-1)=

6) Transforme as somas algébricas em adições sucessivas e posteriormente determine o seu valor:

a)(+2)-(-7)+(-2)-(+5)=                                                  b)(-17)-(+12)-(-15)-(+7)-(-17)=

c)(-14)+(-8)-(-9)+(-3)+(+2)=                                      d)(-12)-(-10)-(+7)+(-12)-(-1)=

e)(-15)+(+3)-(-2)+(+10)+(+1)=                                 f)(-12)+(-10)-(-22)+(+35)-(+10)=

7)Desembarace as expressões de parêntesis, calculando, em seguida o seu valor:

a)(-3)-(+5)-(-8)+(-15)=

b)(+2)-(-7)+(-2)-(-5)+(-4)=

c)(-3)+(-5)-(-3)+(-2)-(+5)=

d)(-5)-(-2)+(+5)-(-7)+(-3)=

e)(-17)+(+12)-(-15)-(+12)-(+8)=

f)(+14)-(+7)+(+8)-(-7)+(+4)=