Odpowiedź :
Odpowiedź:
a) 2/3 + 0,25 = 2/3 + 1/4 = 8/12 + 3/12 = 11/12
b) 0,75 - 5/7 = 3/4 - 5/7 = 21/28 - 20/28= 1/28
c) 2 ⅔ : 0,32= 2⅔: 32/100 = 8/3 : 8/25= 8/3 • 25/8 = 25/3 = 8 1/3
d) 2,7 • 1 1/9 = 27/10 • 10/9 = 27/9 = 3
Odpowiedź:
a) 2/3 + 0,25 = 2/3 + 1/4 = 8/12 + 3/12 = 11/12
b) 0,75 - 5/7 = 3/4 - 5/7 = 21/28 - 20/28= 1/28
c) 2 ⅔ : 0,32= 2⅔: 32/100 = 8/3 : 8/25= 8/3 • 25/8 = 25/3 = 8 1/3
d) 2,7 • 1 1/9 = 27/10 • 10/9 = 27/9 = 3