Yintoni na ipesenti? Formula ekhulwini. Iipesenti - ukubala njani?

Namhlanje kweli hlabathi yanamhlanje ayikwazi ukwenza ngaphandle kwenzala. Nokuba esikolweni, ukuqalela kwibanga 5, abantwana bafunde ingqiqo nokusombulula iingxaki abangaka lilodwa. Abanomdla kuzo zonke izigaba izakhiwo mihla. Ngokomzekelo, iibhanki, imali-mboleko egqithisileyo ixhomekeke ubukhulu lesivumelwano; kwingeniso ledayimenshini kwakhona kuchaphazela izinga lenzala. Ngoko ke kubaluleke kuyimfuneko ukwazi ukuba ipesenti.

Ingcamango umdla

Ngokutsho legend mnye, beza ipesenti evela inkinga osisiyatha. Compositor wayefake inombolo 100, kodwa zize zibekwe ngolu hlobo lulandelayo: 010. Esi sizathu ukuba zero bit yokuqala ephakanyiswe kunye nezinye esehlisa. Unit yaba isleshi esiya. zazo ezinjalo into yokuba kwakukho uphawu lwepesenti. Kakade ke, kukho ezinye amabali malunga ngemvelaphi abangaka lilodwa.

Malunga ekhulwini amaHindu eyaziwa kwinkulungwane V. EYurophu needesimali, nto leyo kakhulu enxibelelene umbono wethu yavela emva eliwaka. Kuba okokuqala kwi-World Old umgwebo ngoko yipesenti Isazinzulu wangena ukusuka Belgium Simon Stevin. Ngowe-1584 zisandul'ukupapashwa itheyibhile lwamaxabiso ezi oosonzululwazi efanayo.

Igama elithi "inzala" imvelaphi yayo ulwimi Latin njenge fifty pro. Ukuba ukuguqulela ibinzana, ufumana 'kwikhulu'. Ngoko ke, phantsi ipesenti ibhekisela elinye ekhulwini inombolo ubukhulu. Eli xabiso kuboniswa uphawu%.

Ngenxa nenzalo ithuba ukuthelekisa iindawo iphela ngaphandle kobunzima. Imbonakalo kwezabelo kakhulu lula ukubala, ngoko ke ziye zanda kangaka.

Translation amaqhezu ukuba iipesenti

Ukuguqula lokugqibela ukuya pesenti kufuneka ekuthiwa formula umdla: iqhezu yande ngama-100% yayanyaniswa umphumo.

Ukuba ufuna ukuguqula kwipesenti zamaqhezu, kuyimfuneko ukuqalisa ukwenza enedesimali, uze usebenzise indlela ngasentla.

Translation ekhulwini iqhekeza

Ngenxa yoko, le pesenti ifomula kunokuba isalamane. Kodwa kufuneka wazi ukuba yokuguqulela eli xabiso kwi ibinzana iqhezu. Ukuze ukuguqula share (ipesenti) e idesimali, kuyimfuneko ukususa uphawu% kwaye ukwabelana nani 100.

Ifomula yokubala ipesenti inani

A umsebenzi test kwi imichiza i "ezigqwesileyo" wafumana-30% abafundi. Iyonke 40 abafundi eklasini. wabhala Bangaphi abafundi quiz kwi "5 '? Lo msebenzi ubonisa ngokufumanisa ipesenti inani.

isicombululo:

1) 40 x 30 = 1200.

2) 1200: 100 = 12 (abafundi).

Impendulo: Imibuzo kwi "5" ezibhalwe ngabafundi-12.

Ungasebenzisa itafile esele zenziwe ukuba sidwelise ezinye amaqhezu neepesenti ezihambelana kubo.

Kubonakala ukuba ifomula inani ekhulwini lumi ngolu hlobo lulandelayo: C = ^{(A ∙ B)} / ₁₀₀ apho A - inani lokuqala (kulo mzekelo ethile elingana 40); B - isixa umdla (kulo msebenzi B = 30%); C - isiphumo oyifunayo.

Ifomula Ukubala inani ipesenti

Lo msebenzi elandelayo iza kubonisa ntoni ipesenti nendlela yokufumana inombolo kwipesenti.

Ingubo mveliso livelisa ilokhwe 1200, leyo 32% - indlela entsha ilokhwe. Zingaphi indlela entsha ilokhwe eyenziweyo bomzi-mveliso?

isicombululo:

1. 1200: 100 = 12 (s) - 1% yazo zonke eziveliswa.

2. 12 x 32 = 384 (isinxibo).

Impendulo: Le mveliso livelisa 384 iilokhwe isimbo esitsha.

Ukuba kuyimfuneko ukufumana inani umdla wayo, sebenzisa le fomyula ilandelayo: C = ^{(A ∙ 100)} / _B, apho A - lilonke inani lezinto (kulo mzekelo A = 1200); B - isixa umdla (ingakumbi task B = 32%); C - inani elingaziwayo.

Luyanda, nokunciphisa inani inombolo ekhulwini kwangaphambili

Abafundi kufuneka bafunde ukuba loo umdla kukuba sizigqale ngeentliziyo, ukusombulula iingxaki ezahlukahlukeneyo. Ukuze oku kufuneka iqondwe njengoko ukwanda okanye ukunciphisa inani kwi N%.

Kudla banikwa umsebenzi, kwaye ebomini oko kuyimfuneko ukwazi ukuba yintoni na inani elifanayo, landa yi nesixa umdla. Umzekelo, banikwe inani H. Sidinga ukuba sazi ukuba yintoni na ixabiso X, ukuba ukwanda kwe, bathi, 40%. Okokuqala kuyimfuneko ukuba ukuguqulela-40% yenani iqhezu (40/100). Ngoko ke, lo Ngenxa yokwanda kwenani X iya kuba: X-40 + X% ∙ = ^{(1 + _40/100)} ∙ X = 1.4 ∙ H. Ukuba endaweni we shintsha naliphi na inani X, thabatha, umzekelo, 100, ngoko lonke nkulumo uyalingana : 1,4 ∙ X = 1,4 ∙ 100 = 140.

Bamalunga nama-siseko efanayo yaye lisetyenziswa ekunciphiseni amanani inani ekhulwini kwangaphambili. Kuyimfuneko ukwenza izibalo: X - X = 40% ∙ X ∙ ^(1-40 / ₁₀₀₎ = 0.6 ∙ BUZA Ukuba ixabiso liyi-100, ngoko 0.6 ∙ X = ^0.6. 100 = 60.

Kukho imisebenzi apho ufuna ukwazi, inani abaninzi kangakanani ekhulwini.

Umzekelo, umqhubi kumsebenzi onikiweyo ekhwele enye inxalenye indlela ngesantya kwe-80 km / h. Kwenye indawo isantya kaloliwe lanyuka ukuya kwi-100 km / h. Ngamthetho mni na ipesenti liye landa isantya kaloliwe?

isicombululo:

Zicingele 80 km / h - 100%. Emva koko ukuvelisa zokubala: (100% ∙ 100 km / h) / 80 km / h = 1000 8 = 125%. Kubonakala ukuba 100 km / h - kuba yi-125%. Ukuze ufumanise ukuba ukwandisa indlela ngesantya, kuyimfuneko ukuba ukubala: 125% - 100% = 25%.

Impendulo: 25% ukunyuka nesantya uloliwe kwindawo yesibini.

kuyinciphise

Kukho iimeko apho kuyimfuneko ukusombulula iingxaki inzala, usebenzisa inani. Enyanisweni, le ndlela yokufumana iziphumo ubukhulu becala yenza kube lula ukuba abafundi, ootitshala kunye hayi kuphela.

Ngoko ke, yintoni na inani? Eli gama libhekisela ukulingana yonxulumano emibini leyo ungaboniswa ngolu hlobo lulandelayo: ^A / _B = ^C / _D.

Xa ngeencwadi zemathematika ulawulo zidweliswe: imveliso yamalungu obugqithisileyo lilingane imveliso we computeryomndilili. Oku kuvakaliswe yi le fomyula ilandelayo: D = A x B x C

Nale nkqubo, kunokwenzeka ukuba ukubala naliphi na inani xa abanye abathathu amalungu olinganise ezaziwayo. Umzekelo, A - inani elingaziwayo. Kufuneka ukuba ukuyifumana

Ekucombululeni iingxaki ngokomlinganiselo kufuneka kuqondwe ngokuthatha inani lomdla. Kukho amaxesha xa kufuneka ukuba uthathe isabelo yezahlukileyo ezahlukeneyo. Thelekisa:

1. Emva zathengiswa-off kwixabiso ebubingelelini ivenkile linyuke nge-25% yaye yaba engange-200. lalisithini ixabiso ngexesha yentengiso.

isicombululo:

Kulo mzekelo ubungakanani eziyimfuneko engange 200 ingqamana 125% ye-(rasprodazhnoy) shirts yerhafu yokuqala. Emva koko, ukuze ufumanise ixabiso layo ngexesha yentengiso, oko kuyimfuneko (200 x 100) ngu: 125. Inzuzo engange-160.

2. Ngomhla 200,000 abemi umhlaba Vitsenets: abantu kunye nabameli beentlanga irobhothi Naawi. Naawi ufunyenwe-80% ye-Vitsenets bebonke. Kuma-40% abantu baxakekile yeyam, intsalela misela tetanium. baye geni njani abantu abaninzi tetanium?

isicombululo:

Into yokuqala ukufumana lwamanani inani labantu kunye nemali ye Naawi. Ngenxa yoko, 80% ye-200 000 baya kuba kulingana 160 000. abameli Njengoko abaninzi ludume irobhothi bahlala Vitsenets. Inani labantu, ngokulandelelana, lingana ne ukuya ku-40 000. Kwezi, 40%, okt 16 000, nimkhonze ngabam. Oku kuthetha ukuba-24 000 abantu bekwi gesi tetaniuma.

utshintsho iyaphindwa inani kwinani umdla

Xa kwacaca ukuba ipesenti enjalo, kuyimfuneko ukuhlola ingqikelelo utshintsho ngokugqibeleleyo isalamane. Eliphelele iindlela zokuguqula ukwanda kwinani elithile. Ngoko ke, X kunyuke nge-100 Yintoni eyayiza endaweni ihlelwe okanye X, kodwa eli nani liya kunyuka ukuya 100: 15 + 100; 99,9 + 100; 100 kunye t +. D.

Ngokuguqula ukwanda koko isihlobo ixabiso linani ipesenti. Masithi X landa nge-20%. Oko kuthetha ukuba, ukuba X iya kuba: X + ∙ 20%. Utshintsho isihlobo ukuthini lonke ixesha kuziwa ukwanda isiqingatha okanye kwisithathu enye nokuhla kwikota, ukwanda nge-15%, njalo njalo. D.

Kukho enye ingongoma ebalulekileyo: Ukuba ixabiso lwe X linyuke-20%, kwaye emva koko omnye-20%, nto leyo ukunyuka bungama-44%, hayi-40%. Oku sikuva izibalo zilandelayo:

X + 1. 20% ∙ X = 1,2 ∙ X

2. 1,2 ∙ X + 20% ∙ 1,2 ∙ X = 1,2 ∙ + 0,24 ∙ X X X = 1,44 ∙

Oku kubonisa ukuba X linyuke nge-44%.

Imizekelo iingxaki umdla

1. Yintoni ipesenti inani 36 linani-9?

isicombululo:

Ngokufumana ipesenti formula yenani 9 kufuneka liphindaphindwe 100 kwaza kwavela 36.

A: Inani 9 25% ye-36.

2. Bala inani le C, nto leyo-10% ye-40.

isicombululo:

Ngokutsho wokubala okufumana inani ipesenti yayo, 40 kufuneka liphindaphindwe 10 kwaye isiphumo wahlulwe yi-100.

A: Inani 4 ukusuka kuma-40 ukuya kwi-10%.

3. I iqabane lokuqala lityale kwishishini engange 4500, le yesibini - 3,500 engange, kwaye eyesithathu - 2000 engange. Benza inzuzo 2400 engange. Inzuzo kwabelwane ngokulinganayo. walahlekelwa Zingaphi engange iqabane lokuqala, xa kuthelekiswa, wavuka kangakanani, ukuba ukwahlula ingeniso ngokwepesenti-mali eyenziwe?

isicombululo:

Ngoko ke, ndawonye baye imali 10,000 engange. Income share ngalinye wayelingana 800 engange. Ukuze ufumane indlela abamele ukufumana iqabane lokuqala indlela salahlekelwa, kuyimfuneko ukwazi ipesenti mali eyenziwe kunye. Emva koko kufuneka ufunde ukuze bazuze njani engange yale umnikelo. Ke yokugqibela - uthabathe 800 engange ukusuka umphumo.

Impendulo: Le iqabane lokuqala baphulukana 280 engange, kunye nokwabelana inzuzo.

umnotho bit

Namhlanje, kakhulu umbuzo ethandwayo - processing mboleko kangangexesha elithile. Kodwa ukuba ukhethe indlela mboleko nenzuzo, ukuba ahlawule? Okokuqala, kufuneka sijonge izinga lenzala. Kunqweneleka ukuba nani lehla laya kangangoko. Thina ke ukusebenzisa indlela yokubala inzala ngemali-mboleko.

Njengoko umthetho, ubungakanani egqithisileyo kuchaphazela isixa ematyaleni, umyinge wenzala kunye nendlela ngokosuku. Ukwahlula Annuity kunye neentlawulo ngokwahlukeneyo. Kwimeko yokuqala, imali-mboleko leyo ukuhlawulwa ngezavenge ezilinganayo ngenyanga nganye. Ngoko ke imali esogqume ukunyuka mboleko engundoqo kunye neendleko umdla ebegqwese lifinyele. Kwimeko yesibini kreditozaemschik uhlawula imali esisigxina uhlawule mboleko, apho ezidityaniswe umdla kwi eseleyo inqununu. Iintlawulo zenyanga lilonke kuya kuncipha.

Ngoku kufuneka ukuba siqwalasele zombini iindlela buyiselo. Ngoko ke, xa umboniso annuity ye egqithisileyo liya kuba phezulu kwaye umahluko - zesixa sentlawulo yokuqala. Ngokwendalo, imiqathango ye-mboleko minye zombini ezi meko.

isiphelo

Ke inzala. Njani ukufunda ngayo? Simple ngokwaneleyo. Noko ke, maxa wambi kuba nzima. Esi sihloko wayeqalisa ukufunda esikolweni, kodwa iyafika yonke entsimini-mboleko, iidiphozithi, irhafu kunye njalo njalo. D. Ngoko ke, kungakuhle ukuya core kwalo mba. Ukuba, ke, akunakwenzeka ukuba enze izibalo, kukho inala iikhalityhuleyitha intanethi ukuze akuncede ukumelana lo msebenzi.