Numeri relativi : somma algebrica

Prof. Mauro La Barbera

  
– 3 – 7 + 11 – 1 =
+ 5 – 6 – 10 + 6 – 2 – 1 =
– 12 – 2 – 4 – 8 =
– 10 + 9 – 12 + 21 =
– 9 – 15 + 6 – 1 – 15 =
– 12 – 3 – 6 + 1 – 12 =
+ 13 – 5 + 6 + 1 – 13 =
+ 15 – 5 + 8 + 3 – 12 =
+ 20 – 7 + 6 + 1 – 14 =
+ 4 – 9 + 6 + 2 – 10 =