Operasi Hitung Bilangan Bulat

 1. Penjumlahan Bilangan Bulat

-a + (-b) = -(a+b)

Contoh :

-4 + (-6)       = -(4+6)

                   = -10

-a + b = -(a-b)

Contoh :

-4 + 6           = -(4-6)

                   = -2

-a + b = b-a

Contoh :

-4 +6 = 6-4

          = 2

2. Pengurangan Bilangan Bulat

a – b = a + (-b)

Contoh :

6 – 4 = 6 + (-4)

          = 2

a – (-b) = a + b

Contoh :

6 – (-4)        = 6 + 4

                   = 10

 3. Perkalian Bilangan Bulat

(+) x (+) = (+)

Contoh :

2 x 3 = 6

(+) x (-) = (-)

Contoh :

2 x (-3) = -6

(-) x (+) = (-)

Contoh :

(-2) x 3 = -6

(-) x (-) = (+)

Contoh :

(-2) x (-3 ) = 6

  

4. Pembagian Bilangan Bulat

(+) : (+) = (+)

Contoh :

15 : 3 = 5

(+) : (-) = (-)

Contoh :

15 : (-3) = -5

(-) : (+) = (-)

Contoh :

(-15) : 3 = -5

(-) : (-) = (+)

Contoh :

(-15) : (-3) = 5