Odpowiedź:
Zad. 2
1/4 + 3/8 = 2/8 + 3/8 = 5/8
5/6 - 1/2 = 5/6 - 3/6 = 2/6
Zad.3
a) 1/5 + 3/10 = 2/10 + 3/10 = 5/10
b) 1/4 + 5/8 = 2/8 + 5/8 = 7/8
c) 1/3 + 4/9 = 3/9 + 4/9 = 7/9
d) 1 1/6 + 3 5/12 = 7/6 + 41/12 = 14/12 + 41/12 = 55/12
e) 3/5 - 3/10 = 6/10 - 3/10 = 3/10
f) 7/3 - 7/9 = 21/9 - 7/9 = 14/9
g) 3 1/2 - 1/4 = 7/2 - 1/4 = 14/4 - 1/4 = 13/4
h) 5 1/3 - 1 1/6 = 16/3 - 7/6 = 32/6 - 7/6 = 25/6
Wyjaśnienie:
