How kuverenga chikamu mari?

Vanhu yagara nyanzvi, sei kuverenga chikamu uwandu. Shoko pacharo rinobva muchiLatin «muzana» Chokwadi, mumutauro Chirungu wakadaro, uye akasiya. "Percent" - chaizvoizvo "mumwe ramazana pamusoro". Zita akakodzera chaizvo nokuti pfungwa iyi chaizvoizvo chimwe ramazana uwandu. Kana iwe wakanganwa chikoro sayenzi vanoda kunzwisisa sei kuti mugove uwandu, muti, 280.550, unotofanira kuiganhura vachiita zana (kana koma kwenhamba maviri pedyo pamusoro). Saka, tinowana 2 805.50. Uye unoziva sei kuti vakawanda pamusoro Verengai zvichaita kwakafanana zvitatu muzana? Very nyore: nekuwanza ramazana rimwe (mu muenzaniso uyu 2 805.50) matatu. Zvachinja 8 416,50.

Sezvaunogona kuona, zviri nyore chaizvo. Kana uchiri usaswedera kwako pfungwa kuti muitiro kugovera yepakutanga nhamba kubudikidza 100 uye vawande mugumisiro nokuda aida mari mhindu, pane mumwe, nyore chaizvo, nenzira sei kuverenga mubereko. Kazhinji ruoko panguva murume ano nguva dzose ane karukureta. On mhando dzakawanda kadambari mudziyo ine yakananga Icon pamusoro nhamba mabhatani, uye mumwe wavo ndiye chiratidzo "%". With bhatani ichi vyschityvaniya muitiro haatori mumasekonzi anopfuura maviri. Toti muchida kuziva zvakawanda sei achava 7% of 550 basa karukureta 550, uye ipapo runonditsikirira bhatani "X" (kuwanda), unofanira dhayira 7, uye ipapo, pane "=" kuvake, kudzvanya kiyi "%". On bhodhi pane mugumisiro: 38,5.

Asi dzimwe nguva tinofanira kudzidza hakusi sei kuverenga chikamu mari, asi musi nekusiyana, chii kubva muzana chete nhamba iri yomumwe. Heuno muenzaniso nyore: nhamba mbiri - 1100 uye 253. Chii chikamu composes 253 ari nhamba muna 1100? Kuti kuverenga izvi, tinofanira vawande nhamba duku (253) 100, uye mugumisiro yakakamurwa nhamba huru (1100). Zvakaratidza 23%. Dzimwe nguva unofanira kuverenga mari kubvisa zvimwe muzana. Kazhinji totaura mari. Munoziva muhoro, asi zvinofadza kuziva sei iwe kuwana pazvanza zvako, pashure chitsama mutero akaundendi utore muhoro. Kuwana pamusoro karukureta muhoro mari, tinya icon "-", agozopinda uwandu hundredths kuti mutariri mamiriro sezvo mitero, uye tinya "%".

How kuverenga chikamu mari, uchishandisa Excel purogiramu? In mbiru, apo tinoda kununura kutsvakwa%, unofanira kupinda chiratidzo "=", zvadaro nhamba kubva yatiri ngaaverenge kubva muzana, ipapo chokuwanziridza chiratidzo, uye pakupedzisira, nhamba hundredths ose. Zvadaro tinya «Enter», uye mugumisiro iri muchitokisi. Kuti zvijeke, tinopa muenzaniso: = 1750 *, 48,%, Nyora. Pamberi oparesheni, unofanira kugadzira chirongwa nokuda Masvomhu: tinya rworuboshwe negonzo bhatani pamusoro muchitokisi.

Vanhu vari kure Masvomhu muupenyu hwavo hwezuva nezuva, kazhinji akatenga pamusoro anokwezva, inonzi zviduku, ari kubhadhara pasi mbiri mubhangi kana the pawn zvitoro kunowanzotanga parumananzombe. How kuverenga chikamu yacho chikwereti zvakanaka? Hatifaniri chete arithmetically ngaaverenge chikwereti, asi kuwanda mari iri nguva (mazuva, mwedzi, makore), nokuti icho rakapa. Somuenzaniso, unoda kutenga motokari uye tora mubhangi 150 zviuru 13% chete annum kwemakore 5 years. How zvikuru unofanira kubhadhara tsika zvemari mumakore mashanu? Tinotenda: 150 000 X 13% X 5 S = 97 500 (uye chete kufarira). To mari iyi inofanira kuwedzerwa mamwe chikwereti pacharo: 97,500 + 150,000 = 247,500.

Saka regai kutenga kupinda zvipikirwa zvikuru pasi kufarira rates, uye kudiwa nokuyera zvose uye overenga mumusoro wako kana uri karukureta. Pasina kuti vokubhengi kuMiddle Ages yakatanga wose kunzwisisa pamatafura kuratidza sei kuverenga chikamu mari kumasangano mukwereti. Masvomhu aya kutanga declassified chete muna 1584. Uye nenzira, unoziva kwarakabva zvomufananidzo yakadaro, kureva chikamu - "%"? Akaonekwa wokufambisa chete muna 1685 nemhaka ... nyore myopia. Nepo Paris, rakabudiswa "Matungamirire zvebhizimisi Mathematics" vadzidzi-vatengesi. Typewriting akafuratira akagamuchira kwakapararira kusvikira pakuguma XVII remakore chiratidzo «cto», izvo rinomirira ramazana chikamu, mbiri duku toe, akaparadzaniswa pedyo yokutema miti. Zvakazoitika%. Uye sezvo ichi raiva bhuku, chizvarwa itsva vatengesi vakatora somunhu akapiwa kuvake.