a) 1/2 + 1,5 = 1/2 + 3/2 = 2
3,2 - 1 1/3 = 16/5 - 4/3 = 28/15 = 1 cała 13/15
7,3 - 4 2/25 = 73/10 - 102/25 = 161/50 = 3 całe 11/50
b) 2,4 * 3/8 = 12/5 * 3/8 = 3/5 * 3/2 = 9/10
2 3/4 : 2,75 = 11/4 : 11/4 = 1
2,5 * 2 1/2 = 2,5 * 2,5 = 6,25
c) (0,2 + 1/2)^2 = (1/5 + 1/2)^2 = (7/10)^2 = 49/100
(1 3/4 - 0,85)^2 = (7/4 - 17/20)^2 = (9/10)^2 = 81/100
(6 1/5 - 5,94)^2 = 31//5 - 297/50)^2 = (13/50)^2 = 169/2500
d) (0,5)^3 + (1/3)^2 = (1/2)^3 + 1/9 = 1/8 + 1/9 17/72
(0,1)^3 + (1/5)^2 = (1/10)^3 + 1/25 = 1/1000 + 1/25 = 41/1000
1,4^2 + (4/5)^2 = (7/5)^2 + 16/25 = 49/25 + 16/25 = 13/5 = 2 całe 3/5
