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3.4 ori sididis fardobis procentuli warmodgena<br />
mizani:<br />
viswavloT:<br />
1. ori sididis fardobis procentuli Cawera;<br />
2. monacemTa gamosaxva fardobis procentiT.<br />
praqtikuli amocanebis amoxsnisas sidideebis Sefardebas xSirad<br />
procentebiT gamosaxaven.<br />
amocana 1. rZe maRalcximianad iTvleba, Tu masSi cximis Semcve loba<br />
aranakleb 4,5%-ia. qarxanaSi Semosuli rZis cximianobis dasadge nad<br />
Seamowmes 1,5kg rZis sinji. aRmoCnda, rom igi 63g cxims Seicavda.<br />
SeiZleba Tu ara, es rZe maRalcximianad CaiTvalos?<br />
amoxsna. gamovsaxoT rZisa da masSi Semavali cximis wona erTi da imave<br />
erTeulebSi:<br />
1,5kg=1500g.<br />
gamoTvlebi<br />
kalkulatoriT<br />
vipovoT, rZis wonis ra nawils warmoadgens cximis<br />
wona da gamovsaxoT igi procentebSi:<br />
63 ÷ 1500 x 100 = 4,2<br />
.<br />
daskvna: am rZeSi cximis Semcveloba 4,2%-ia. maSasadame, rZe maRalcximiani<br />
ar aris.<br />
amocana 2. erTma kalaTburTelma matCis ganmavlobaSi<br />
20 tyorcna ganaxor ciela, romelTagan 15 tyorcna<br />
Sedegiani iyo, xolo meorem 40-jer tyorcna, aqedan 28<br />
Caagdo kalaTSi. romeli kalaTburTeli ufro zustad<br />
tyorcnis?<br />
amoxsna. imis gasarkvevad, Tu ra sizustiT tyorcnidnen<br />
kalaT burTe lebi, daviTvaloT maT mier natyorcni<br />
burTebis ramdeni procenti moxvda kalaTSi.<br />
gamoTvlebi CavataroT or etapad:<br />
I etapi: gavigoT, TiToeuli kalaTburTelis mier natyorcni<br />
burT ebis raodenobis ra nawils Seadgens Cagdebuli<br />
burTebis raodenoba:<br />
pirveli kalaTburTeli: 15 : 20 = 0, 75<br />
meore kalaTburTeli: 28 : 40 = 0, 7<br />
II etapi: miRebuli ricxvebi CavweroT procentis saxiT:<br />
pirveli kalaTburTeli: 0, 75 = ( 0, 75 × 100)% = 75%<br />
meore kalaTburTeli: 0, 7 = (0, 7 × 100)% = 70%<br />
daskvna: pirveli kalaTburTelis tyorcnis sizustea 75%, meoresi ki<br />
_ 70%. maSasadame, pirveli kalaTburTeli ufro zustad tyorcnis<br />
burTs.<br />
Tavi 3 • monacemebi 165