zad 1.
( / to kreska ułamkowa )
a) 3 3/4 + 2 1/7 = 3 21/28 + 2 4/28 = 5 25/28
b) 6 3/4 - 4 1/3 = 6 9/12 - 4 4/12 = 2 5/12
c) 5 4/15 - 1 2/5 = 5 4/15 - 1 6/15 = 4 19/15 - 1 6/15 = 3 13/15
d) 4 3/8 + 5 5/6 = 4 9/24 + 5 20/24 = 9 29/24 = 10 5/24
e) 8 3/5 - 3 1/4 = 8 12/20 - 3 5/20 = 5 7/20
f) 7 10/21 + 2 9/14 = 7 20/42 + 2 27/42 = 9 47/42 = 10 5/42
g) 4 1/11 + 3 1/33 = 4 3/33 + 3 1/33 = 7 4/33
h) 3 5/9 - 1 1/2 = 3 10/18 - 1 9/18 = 3 1/18
i) 5 6/7 - 3/4 = 5 24/28 - 21/28 = 5 1/28
zad 2.
(tu ci troszke pomoge bo ostatnie to nie kumam shsh za wysokie pp)
a) 9 1/5 - 3 7/9 = 9 9/45 - 3 35/45 = 8 54/45 - 3 35/45 = 5 19/45
b) 12 1/2 + 5 9/10 + 4 2/3 = 12 15/30 + 5 27/30 + 4 20/30 = 21 52/30 = 22 22/30
Myśle ze pomogłam buziaki :*
