UŁAMKI ZWYKLE
ZAD 3. OBLICZ :
A ) 1 5/6 + 2 4/7=..............................................
B) 4 6/7 - 2 1/5 =..............................................
C) 8 2/9 - 3 5/6 =....................................................
D) 7/15 * 3/4 =........................................................
E) 4/7 : 8/21 =.....................................................
F) 2 2/3 * 1 3/4 = ........................................................
ZAD 4. a ) Zamień ułamki na liczby mieszane : 12/7 = ................... 34/11=..................
b) Zamień liczby mieszane na ułamki : 3 4/5=.................. 2 7/ 11 =.......................
c ) zapisz odwrotnosci liczb : 6/13 =....................... 4 6/7
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b) 4 6/7 - 2 1/5= 4 30/35 - 2 7/35 = 2 23/35
c)8 2/9 - 3 5/6= 8 4/18 - 3 15/18 = 7 22/18 - 3 15/18 = 4 7/18
d) 7/15* 3/4 = 7/20
e)4/7 : 8/21 = 4/7 * 21/8 = 3/2 = 1 1/2
f) 2 2/3 * 1 3/4 = 8/3 * 7/4 (skróć ułamki 8 i 4 przez 4 ) = 14/3 = 4 2/3
zad.4
a) 34/11 = 3 1/11, 12/7= 1 5/7
b) 3 4/5= 19/5, 2 7/11 = 27/11
c) 6/13= 13/6, 4 6/7= 7/34