Răspuns :
1) 3,(54)=
54
3 ____ = 3*99+54
99 _______ =297+54
99 ______ = 351(9
99 ___ = 39
99 ___
11
2) 5 pe 3=1,(6)
997 pe 750=1,329(3)
3) a)0,8+2 pe 3= 3)8 10) 2 24 pe 30 +20 pe 30= 44 pe 30
____ + ___ =
10 3
b) 3,05- 7 pe 40= 2)305 5) 7 610 35 575(5 115(5 23
___ - ___ = _____ - ___ =___ = ___ =___
100 40 200 200 200 40 20
c)0,48* 1
_ = 0,48 *0,125=0,06
8
54
3 ____ = 3*99+54
99 _______ =297+54
99 ______ = 351(9
99 ___ = 39
99 ___
11
2) 5 pe 3=1,(6)
997 pe 750=1,329(3)
3) a)0,8+2 pe 3= 3)8 10) 2 24 pe 30 +20 pe 30= 44 pe 30
____ + ___ =
10 3
b) 3,05- 7 pe 40= 2)305 5) 7 610 35 575(5 115(5 23
___ - ___ = _____ - ___ =___ = ___ =___
100 40 200 200 200 40 20
c)0,48* 1
_ = 0,48 *0,125=0,06
8
1) 3,(54) = 354 - 3 / 99 = 351/99 ( se simplifica cu 9 ) = 39/11
2) 5/3 = 1,(6)
997/750 = 1,32
3) 3) 5)
a) 0,8 + 2/3 = 8/10 + 2/3 = 4/5 + 2/3 = 12/15 + 10/15 = 22/15 = 1,4(6)
2) (5
b) 3,05 - 7/40 = 305/100 - 7/40 = 61/20 - 7/40 = 122/40 - 7/40 = 115/40 = 23/8 = 2,875
c) 0,48 x 1/8 = 48/100 x 1/8 = 3/50 = 0,06
2) 5/3 = 1,(6)
997/750 = 1,32
3) 3) 5)
a) 0,8 + 2/3 = 8/10 + 2/3 = 4/5 + 2/3 = 12/15 + 10/15 = 22/15 = 1,4(6)
2) (5
b) 3,05 - 7/40 = 305/100 - 7/40 = 61/20 - 7/40 = 122/40 - 7/40 = 115/40 = 23/8 = 2,875
c) 0,48 x 1/8 = 48/100 x 1/8 = 3/50 = 0,06