Odpowiedź:
zad. 1
a) 3/9 = 6/18
2/7 = 8/28
b) 1 5/7 = 1 25/35
2 5/13 = 2 15/39
c) 25/45 = 5/9
16/40 = 2/5
d) 4 24/40 = 4 3/5
5 30/48 = 5 5/8
zad. 2
a) 13/8 = 1 5/8
19/2 = 9 1/2
b) 27/7 = 3 6/7
43/12 = 3 7/12
c) 55/13 = 4 3/13
65/24 = 2 17/24
d) 137/10 = 13 7/10
204/75 = 2 54/75
zad. 3
a) 1 2/9 = 11/9
1 1/4 = 5/4
b) 2 1/2 = 5/2
2 4/5 = 14/5
c) 3 3/4 = 15/4
2 5/9 = 23/9
d) 6 5/7 = 47/7
8 3/11 = 91/11
zad. 4
a) 2 2/7 + 3 4/7 = 5 6/7
4 4/9 + 6 7/9 = 10 11/9 = 11 2/9
b) 5 - 3/8 = 4 5/8
8 - 2 3/5 = 5 2/5
c) 3 3/4 - 1/2 = 3 1/4
5 3/4 + 3 1/2 = 8 5/4 = 9 1/4
