Sifat-Sifat Operasi Hitung Bilangan Bulat

1.  Sifat Komutatif ( Pertukaran )

·         Penjumlahan

a + b = b + a

Contoh :

7 + 3 = 3 + 7

          10

·         Perkalian

a x b = b x a

Contoh :

7 x 3 = 3 x 7

          21

2. Sifat Asosiatif ( Pengelompokan )

·         Penjumlahan

a + b + c = ( a + b ) + c

Contoh :

1 + 2 + 3       = ( 1 + 2 ) + 3

                   = 3 + 3

                   = 6

a + b + c = a + ( b  + c )

Contoh :

1 + 2 + 3       =  1 + ( 2  + 3 )

                   = 1 + 5

                   = 6

·         Perkalian

( a x b ) x c =  a x ( b x c )

Contoh :

( 1 x 2 ) x 3 =  1 x ( 2 x 3 )

                   = 1 x 6

                   = 6

 3. Sifat Distributif ( Penyebaran )

·         Perkalian

a x ( b + c ) =  ( a x b ) + ( a x c )

Contoh :

1 x ( 2 + 3 )  = ( 1 x 2 ) + ( 1 x 3 )

                   = 2 + 3

                   = 5