= 20 - 12
________
15
= 8/15 (C)
7. Hasil dari 3 1/2 - 2 4/8 adalah ...
A. 1 3/8 C. 1
B. 1/2 D. 1 1/2
jawaban : C
cara :
3 1/2 - 2 4/8 =
7/2 - 20/8 =
= (7x4) - (20x1)
______________
8
= 28 - 20
_______
8
= 8/8 = 1 (C)