Réponse :
Horizontal
1. -556 - 682 = -1 238
2. -8 + 24 = 16 /// -250 - 250 = -500
3. 123 - 458 = -335
4. -18 + 12 - 13 = -19 /// -12 - (-4) + (-12) = -20
5. 2500 - 2720 + 4586 = 4366
6. -800 + 6540 = 5740
Vertical
A. -33 + 12 = -21 // -100 - 5 = -105
B. -5706 - 75000 = 80 706
