Kodi kuwerengera kuchuluka kwa ndalama?

Anthu kale katswiri, mmene kuwerengera kuchuluka kwa ndalama. Mawu likubwera kuchokera Latin «peresenti» Ndipotu, mu chingelezi amenewa, ndipo anachoka. "Peresenti" - limatanthauza "chimodzi mazana a". Dzinali ndi oyenera kwambiri, chifukwa lingaliro ili ndi chimodzimodzi munthu zana la ndalama. Ngati mwaiwalapo sukulu sayansi ndi kufuna kudziwa mmene kutenga gawo la chiwerengero cha, nkuti, 280.550, inu basi muchigawane mu zana (kapena koma mu manambalawo awiri pafupi ndi pamwamba). Choncho, ife tikufika 2 805.50. Ndipo kodi inu mukudziwa angati a ndalama pamwamba adzakhala zopanda peresenti atatu? lophweka: kuchulukitsa zana limodzi (chitsanzo ichi 2 805.50) atatu. Likukhalira 8 416,50.

Monga mukuonera, ndi lophweka. Ngati inu simukhala mu malingaliro anu kuti ndondomeko kugawa manambala wapachiyambi 100 ndi kuchulukitsa zotsatira kuchuluka anakhumba chidwi, pali wina, yosavuta, njira kuŵerenga chidwi. Kawirikawiri pa dzanja munthu ano nthawi ndi Chiwerengero. Pa zitsanzo zambiri za chipangizo kompyuta ali chithunzi enieni mabatani angapo, ndipo mmodzi wa iwo ndi chizindikiro "%". Ndi batani izi vyschityvaniya ndondomeko satenga masekondi oposa awiri. Tiyeni tinene mukufuna kudziwa mmene adzakhala 7% ya 550 alemba ntchito Chiwerengero 550, kenako amayikanikiza batani "×" (chulukanani), muyenera oyimba 7, kenako, mmalo mwa "=" mafano, kukanikiza mfungulo "%". Pa gulu pali chifukwa: 38,5.

Koma nthawi zina timafuna kuphunzira si mmene kuwerengera kuchuluka kwa ndalama, koma m'malo mwake, kuchuluka nambala wani ndi mzake. Pano pali chitsanzo losavuta: manambala awiri - 1100 ndi 253. Kodi anthu analemba 253 wa chiwerengero mu 1100? Pofuna kudziwa ichi, tiyenera kuchulukitsa chiwerengero wocheperako (253) 100, ndipo chotsatira lagawidwa ndi ambiri (1100). Likukhalira 23%. Nthawi zina muyenera kuwerengera ndalama opanda ena peresenti. Kawirikawiri izo zifika malipilo. Inu mukudziwa malipiro, koma ndi chidwi kudziwa momwe inu mufika pa manja anu, patapita kuchuluka kwa msonkho yowerengera kudzachitika malipiro. Muzimupatsa pa Chiwerengero kuchuluka malipiro, alemba pa chizindikirochi "-", ndiye kulowa chiwerengero cha hundredths wa kuti boma kuyang'anira monga msonkho, ndipo alemba pa "%".

Kodi kuwerengera kuchuluka kwa ndalama, ntchito pulogalamu kupambana? Mu ndime, kumene ife tikufuna kupulumutsa% anakhumba, muyenera kulowa chizindikiro "=", ndiye chiwerengero kuchokera komwe ife kuwerengera kuchuluka, ndiye chizindikiro chulutsa, ndipo potsiriza, chiwerengero cha hundredths a. Ndiye dinani «Lowani», ndi chifukwa amapezeka mu selo. Chifukwa ndi losavuta kumva, ife Mwachitsanzo: = 1750 *, 48,%, Lowani. Pamaso ntchito, muyenera kuti sintha zothandizira kuwerengetsera: dinani kumanzere mbewa batani pa foni.

Anthu amene ali kutali kuwerengetsera moyo wawo, nthawi zambiri anagula pa wokongola, amati zazing'ono, malipiro pansi pa ngongole ku banki kapena chuma masitolo nthawi zambiri kothawira. Kodi kuwerengera kuchuluka kwa ngongole bwino? Sitiyenera arithmetically yekha kuwerengera ngongole, komanso kuchulukitsa kuchuluka kuchuluka kwa nthawi (masiku, miyezi, zaka), chomwe ndi chikalata. Mwachitsanzo, mukufuna kugula galimoto ndi kutenga banki 150 zikwi pa 13% pa annum kwa zaka 5. M'mene mukufunira kulipira kosamalira ndalama m'zaka zisanu? Timakhulupirira: 150 000 × 13% × 5 m = 97 500 (ndipo kokha chidwi). Kuti ndalama imeneyi ayenera zidzawonjezedwa ngongole zambiri yokha: 97,500 + 150,000 = 247,500.

Kotero musati kugula mu malonjezo a mitengo otsika kwambiri chidwi, ndipo kufunika kulemera zonse ndi kuwerengera mu mutu wanu kapena pa Chiwerengero. Osati kanthu kuti osunga ndalama mu Ages Middle anayamba lonse matebulo zovuta kusonyeza kuwerengera kuchuluka kwa ndalama anawapatsa wobwereka lapansi. kuwerengetsera awa anali woyamba declassified yekha mu 1584. Ndipo mwa njira, kodi mukudziwa kumene anachokera ngati chizindikiro, kutanthauza kuchuluka - "%"? Iye anaonekera kupezeka chabe mu 1685 kuyamika ... myopia yosavuta. Ali Paris, inasindikizidwa "Malangizo Masamu malonda" ophunzira ochita malonda. Typewriting amasiyidwa ndi analandira ambiri mpaka mapeto a XVII m'ma chizindikiro «cto», womwenso kwa magawo zana, tiwiri chala, ankasiyana slash a. Anamuuza%. Ndipo popeza anali buku, mbadwo watsopano wa amalonda anatenga monga chizindikiro anapatsidwa.