PETI RAZRED - SABIRANJE I ODUZIMANJE RAZLOMAKA

1) DOPUNI ŠTA NEDOSTAJE:
1) 2/7 + 3/7 = */7
2) 4/9 + 2/9 = 6/*
3)5/11 + 2/11 + 3/11 = */11
4)5/16 + 3/16 + 9/16 + 7/16 = +/#
5)7/10 -1/10 = */10
6)13/15 - */15 = 5/15 = $/3
7)(2/7 + 3/7) - 4/7 =
8)11/14 - (3/14 + 5/14) =
2) 15 – (4+4/9 + 2+2/9)=
3) (3+3/7 + 4+4/7) - (7+1/7 - (5+5/7))=
4)IZRAČUNAJ OBIM TROUGLA ČIJE STRANICE IMAJU DUŽINE:
a= 5 i 1/10cm b= 6 i 3/10cm c=7 i 7/10cm.
5)BROJU 7i7/10 dodaj razliku brojeva 9 i 6i4/15.