Question

3 ) Calcule na sua prova : a ) ( + 6 ) + ( +19 ) = b ) ( + 3 ) + ( + 13 ) = c ) ( - 15 ) + ( + 8 ) = d ) ( + 7 ) + ( - 1 ) = e ) ( - 7 ) + ( - 8 ) = f ) ( - 9 ) + ( + 10 ) = g ) ( + 20 ) + ( - 4 ) = h ) ( + 4 ) + ( - 4 ) =

Answer 1

Resposta:

a ) ( + 6 ) + ( +19 ) =

      + 6 + 19

       + 25

b ) ( + 3 ) + ( + 13 ) =

   +3 + 13

  + 16

c ) ( - 15 ) + ( + 8 ) =

     -15 + 8

       -7

d ) ( + 7 ) + ( - 1 ) =

      + 7 - 1

       + 6

e ) ( - 7 ) + ( - 8 ) =

     - 7 - 8

      -15

f ) ( - 9 ) + ( + 10 ) =

    -9 + 10

      + 1

g ) ( + 20 ) + ( - 4 ) =

      +20 - 4

        + 16

h ) ( + 4 ) + ( - 4 ) =

      + 4 - 4

            0

Explicação passo-a-passo: