Oblicz: a) 15 2/9+ 3 3/5 b) 9 3/10- 5 2/5 c)5- 1 5/13 d) 5,1+ 3/5 e)6,6- 3 1/8 f) 5 3/7- 2,375 zad 2 Oblicz; a)3 4/9+ 5,5 b)4,27-1 3/5 c)3 2/9* 1,8 d)3 5/8 : 0,25

a) 15 2/9 + 3 3/5= 15 10/45 + 3 27/45 = 18 37/45 b) 9 3/10 - 5 2/5 = 9 3/10 - 5 4/10 = 8 13/10 - 5 4/10 = 4 9/10 c) 5 - 1 5/13= 4 13/13 - 1 5/13= 3 8/13 d) 5,1 + 3/5= 5,1 + 0,6 = 5,7 lub 5 1/10 + 6/10= 5 7/10 e) 6,6 - 3 1/8 = 6 3/5 - 3 1/8 = 6 24/40 - 3 5/40 = 3 19/40 Zadanie 2 a) 3  4/9 + 5,5= 3 8/18 + 5 9/18 = 8 17/18 b) 4,27 - 1 3/5 = 4,27 - 1,60 = 2,67 lub 4 27/100 - 1 60/100 = 2 67/100  c) 3 2/9 * 1,8 = 3 2/9 * 1 4/5= 29/9 * 9/5 = 29/5 = 5 4/5 d) 3 5/8 : 0,25 = 3 5/8 : 1/4 = 29/8 : 1/4 = 29/8 * 4/1 = 29/2