zad.4
a)4³=64
b)3⁴=81
c)0,5²=0,25
d)0,2³=0,008
e)(⅓)²=1/9
f)(2/5)³=8/125
g)(1 2/9)²=(11/9)²=121/81
h)(1 ½)³=(3/2)³=27/8
zad.5
a) 1⅔ +⅕= 1 10/15 + 3/15 = 1 13/15
b)2 3/7 - ⅝ = 2 24/56 - 35/56 = 1 45/56
c) 1¾ × 5/7 = 7/4 × 5/7 =5/4 =1 ¼
d) 2 ⅓ ÷ 1 2/9 = 7/3 × 9/11 =21/11 = 1 10/11
