cara menghitung bilangan bulat perkalian dan pembagian

Perkalian :
+ × + = +
+ × - = -
- × + = -
- × - = +
Contoh :
3 × 4 = 12
2 × (-3) = -6
-6 × 7 = -42
- 4 × -4 = 16
Pembagian :
+ : + = +
+ : - = -
- : + = -
- : - = +
Contoh:
6 : 2 = 3
10 : (-2) = -5
-25 : 5 = -5
-20 : -10 = -2

Semoga membantu :)