Question

a) ( -5 ) - ( -3 ) - ( + 7 ) + 4 = b) ( +1 ) + ( + 6) - ( -2 ) + ( -9 )= c) ( -4 ) - (-3 ) + ( +2 ) - ( + 1 ) + ( - 8 ) = d) – 5 + 2 - ( -4 ) + 2 - ( + 5 ) + 2 = e ) ( -5 ) + ( + 4 ) - ( + 3 ) + ( -2) - ( -1 )= f) -12 + 4 + 11 – 8 + 13 + 1= g) ( +6) + ( -14 ) + ( -7 ) + (+6) + (+9) = h ) -7 – 3 – 9 + 8 – 1 – 4 = i ) - 300 + 300 =

Answer 1

a) ( - 5 ) - ( - 3 ) - ( + 7 ) + 4 =

   - 5 + 3 - 7 + 4 = - 5

b) ( + 1 ) + ( + 6) - (  -2 ) + ( - 9 ) =

   1 + 6 + 2 - 9 = 0

c) ( - 4 ) - ( - 3 ) + ( + 2 ) - ( +  1 ) + ( - 8 )  =

   - 4 + 3 + 2 - 1 - 8 = - 8

d) - 5 + 2 - ( - 4 ) + 2 - ( + 5 ) + 2 =

  - 5 + 2 + 4 + 2 - 5 + 2 = 0

e ) ( - 5 ) + ( + 4 ) - ( + 3 ) + ( - 2) - ( - 1 ) =

     - 5 + 4 - 3 - 2 + 1 = - 5

f) - 12 + 4 + 11 - 8 + 13 + 1 = 9

g) ( + 6 ) + ( - 14 ) + ( - 7 ) + ( + 6 ) + ( + 9 ) =

   + 6 - 14 - 7 + 6 + 9 = 0

h ) - 7 - 3 - 9 + 8 - 1 - 4 = - 16

i ) - 300 + 300 = 0