- Sifat Kumulatif Penjumlahan
(-18) + 9 = 9 + (-18)
-9 = -9
a + b = b + a
2. Sifat Komutatif Perkalian
Contoh:
-8 x 9 = 9 x (-8)
-72 = - 72
a x b = b x a
3. Sifat Asosiatif Penjumlahan
Contoh:
(8+15) + 5 = 8 + (15+5)
23 + 5 = 8 + 20
28 = 28
(a + b) + c = a + (b+c)
4. Sifat Asosiatif Perkalian
Contoh:
(4x5) x 3 = 4 x (5x3)
20 x 3 = 4 x 15
60 = 60
(axb) x c = a x (bx c)
5. Sifat Distributif
Perkalian terhadap penjumlahan
Contoh:
4 x (5+2) = (4 x 5) + (4 x 2)
4 x 7 = 20 + 8
28 = 28
a x (b + c) = (a x b) + (a x c)
Perkalian terhadap pengurangan
8 x (6-3) = (8 x 6) – (8 x 3)
8 x 3 = 48 - 24
24 = 24
a x (b – c) = (a x b) – (a x c)
