Numele

Numele .. data:

Clasa: a IV-a

Fisa de lucru

1.Calculati:

2/9 + 4/9 = 6/15 + 3/15 = 5/8 + 2/8 =

7/9 3/9 =4/5 2/5 = 3/8 1/8 =

2/9 + 1/9 = 13/15 10/15= 10/12-4/12=

3/7 + 2/7 4/7 = 3/7 + 2/7 4/7 = 10/17-3/17-2/17=

2.Comparati fractiile date :

4/6..1/6 2/4..3/4

3/4 ..4/41/4. .1

2/6..2/4 5/6..6/6 3/6..2/612/12. .14/14

3.Scrieti in ordine crescatoare fractiile:

a) 4/7 , 1/7 , 6/7 ; .

b) 2/9 , 2/8 , 2/5 ; ..

c) 6/9 , 8/9 , 3/9 ; ..

d) 3/5 , 1/5 , 2/5 ; ..

e) 8/19 , 8/8 , 8/10 ; ..

f) 7/8 , 7/13 , 7/11 ; ..

4.Completati fractiile date astfel incat ele sa fie :

a) supraunitare:

../7 , ../3 , ../8 , ../15 , /10 , ./4 , ../2 , ./14 , ../36 , ../28;

5/. , 4/ . , 11/. , 13/ .. , 10/ , 7/ , 4/ , 2/.. , 18/ . , 12/ ;

b) echiunitare:

./3 , ./10 ,../2 ,../14,./8,./7,./5,../9,../11,../17;

2/.. ,1/.. ,4/.. ,16/.. ,23/.. ,14/.. ,6/.. ,12/. ,73/.. ,41/. ;

c) subunitare:

../3 ,../8 ,../5 ,../6 ,../10 ,../13 ,../19 ,./33 ,../9 ,../2 ;

1/. ,7/. ,3/. ,29/.. ,34/. ,21/. ,11/. ,8/. ,3/. ,13/