Wamba decimals ndi ntchito nawo

Kale ku pulayimale, ophunzira akukumana ndi ting'onoting'ono. Ndiyeno iwo amaoneka iliyonse lathu. Tisaiwale kanthu ndi chiwerengero n'zosatheka. Choncho m'pofunika kudziwa zinthu zonse za tuzigawo twa wamba ndi decimal. mfundo izi ndi yosavuta, chinthu chachikulu - kumvetsa chirichonse mu dongosolo.

Chifukwa tuzigawo twa?

Dziko lonse imakhala zinthu lonse. Choncho, kufanana chofunika. Koma moyo wa tsiku ndi tsiku zonse amakankhira anthu ogwira ntchito ndi mbali ya zinthu ndi zinthu.

Mwachitsanzo, chocolate wapangidwa ndi cloves angapo. Talingalirani pamene aumbike mwa khumi rectangles matailosi. Ngati lagawidwa ziwiri, iwe zidutswa 6. Bwino kugawidwa ndi atatu. Koma asanu sadzatha kwa maulendo angapo magawo a chokoleti.

Mwa njira, zigawo izi - kale uja. A zina magawano awo zinagwira manambala zovuta zambiri.

ndi "mpukutu" n'chiyani?

nambala iyi imakhala ndi mbali ya wagawo ndi. Kunja, zikuoneka ngati manambala awiri olekanitsidwa ndi slash kapena yopingasa. Mbali imeneyi imatchedwa fractional. Number olembedwa pamwamba (kumanzere), amatchedwa numerator. Kodi wayima pansi (kumanja), ndi chimene chachititsa.

Ndipotu, kachigawo mzere ndi chizindikiro ya kugawikana. Yemwe ndi numerator angatchedwe lopeza, ndi chimene chachititsa - wogawira.

Kodi tuzigawo twa?

Mu masamu, ali wiri zokha basi: wamba decimals. Ophunzira oyamba tikuuzidwa mu sukulu ya pulayimale, kuwayitana iwo ndi "mpirawo." Chachiwiri kuphunzira mu sitandade 5. Ndi pamene maina amenewa amapezeka.

Common tuzigawo twa - onse amene analembedwa monga manambala awiri ankasiyana mukapeza munthu. Mwachitsanzo, 4/7. Decimal - nambala imene mbali fractional wa mbiri Pamalo ndipo ndi wosiyana lonse ndi koma ndi. Mwachitsanzo, 4.7. Ophunzira ayenera kumvetsa bwino kuti zitsanzo ziwiri - ndi chiwerengero chosiyana.

Lililonse kachigawo ophweka akhoza kulembedwa ngati decimal a. mawu ili pafupi nthawizonse owona mu iwowo. Pali malamulo amene amalora ife kulemba wamba kachigawo kachigawo decimal.

Kodi subspecies ndi mitundu ya tuzigawo twa?

Ndikwabwino kuyambitsa kuti mumve, monga iwo akuphunziridwa. Woyamba kupita tuzigawo twa wamba. Ena mwa iwo ndi 5 subspecies.

1. Kukhoza. numerator ake nthawi zonse pasanathe chimene chachititsa lapansi.

2. Cholakwika. Iye numerator ndi wamkulu kuposa kapena wolingana ndi chimene chachititsa lapansi.

3. Contractility / irreducible. Iwo akhoza kukhala zolondola ndi lolakwika. Kodi chofunika kwambiri, kaya numerator ku chimene chachititsa zinthu wamba. Ngati pali, ndiye iwo amadalira kugawanitsa mbali zonse za nusu, ndicho, kuchepetsa izo.

4. Osokonezeka. Kuti kabwerebwere zolondola (cholakwika) fractional gawo lake zimachitika inteja ndi. Ndipo nthawi zonse kumanzere.

5. Chigawo. Iwo aumbike mwa tuzigawo twa awiri anapambulwa pa wina ndi mzake. Ndiko kuti, ali slashes atatu basi.

Ife decimals ndi subspecies awiri okha:

• yotsiriza, i.e. ina imene gawo fractional ndi njanjira (atsirizika);

• wopandamalire - nambala yomwe decimal malo sikuthetsa (mukhoza kulemba umasinthasintha).

Kodi kusintha decimal kwa olaula ndi?

Ngati ndi chiwerengero amalire, ndiye ntchito gulu zochokera ulamuliro - ndimva kulemba kwanga. Ndiko kuti, muyenera kuwerenga ndi kulemba molondola, koma popanda mfundo decimal, ndi slash.

Pamene chinachititsa kuti chimene chachititsa, tiyenera kukumbukira kuti nthawi zonse limodzi ndi ena ziro. Kufunika yamasika kulemba manambala ngati ambiri a fractional cha nambala nkhawa.

Kodi kutembenuka decimals m'zigawo wamba ngati inteja gawo akusowa, pali ziro? Mwachitsanzo, 0,9 kapena 0,05. Pambuyo kutsatira lamulo limeneli, likukhalira kuti muyenera kulemba ziro mfundo. Koma si mwasankha. Patsalanso kuti inalembedwa fractional mbali. Nambala yoyamba ya chimene chachititsa ndi wofanana 10, wachiwiri - 100. Zimenezo, zitsanzo awa angapo: 9/10, 5/100. Yotsirizira likukhalira kuti kuchepetsedwa ndi 5. Choncho, chifukwa cha izo kulembedwa 1/20.

Zochokera decimal kuti wamba, ngati inteja gawo chosiyana ndi ziro? Mwachitsanzo, 5,23 kapena 13,00108. Mu zitsanzo ziwiri, ndi inteja gawo kuwerenga ndi mulingo wake inalembedwa. Mbali yoyamba - 5, lachiwiri - 13. Kenako muyenera kupita mu gawo fractional. Akudalira kuchita ntchito yomweyo. Nambala koyamba 23/100, wachiwiri - 108/100000. Phindu lachiwiri ayenera kuchepetsedwa kachiwiri. Poyankha ife kupeza ngati wosanganiza tuzigawo twa 5 ndi 23/100 13 27/25000.

Kodi kumasulira ndi decimal wopandamalire ofanana?

Ngati ndi sanali nthawi, izo sizingatheke kuti achite opareshoni zimenezi. Chimenechi ndi chifukwa chakuti aliyense kachigawo decimal nthawi zonse anawamasulira kapena mapeto kapena nthawi.

Chinthu chokha chimene amaloledwa kuchita ndi kuwombera ndi - ndi kuwatchinjiriza iwo. Koma ndiye decimal adzakhala pafupifupi wofanana kuti wosatha. Kale zikhoza kusinthidwa m'zigawo wamba. Koma n'zosiyana ndondomeko: kusamukira decimal wa - osataya kufunika koyamba. Kuti, si nthawi tuzigawo twa wopandamalire ofanana si anawamasulira. M'pofunika kumbukirani.

Kodi kulemba ndi wopandamalire nthawi kachigawo mu mawonekedwe a wamba?

Mu Chiwerengerochi pambuyo mfundo decimal nthawi zonse amaoneka manambala chimodzi kapena zingapo kuti sadzachitanso. Iwo ali kutchedwa nthawi. Mwachitsanzo, 0,3 (3). Pano, "3" mu nyengo. Iwo ali ndi gulu la umunthu, chifukwa n'kukhala tuzigawo twa wamba.

Amene anakomana ndi tuzigawo twa nthawi, amadziwika kuti akhale oyera kapena losanganikirana. Mbali yoyamba, nthawi akuyamba lamanja la mfundo decimal. Lachiwiri - gawo fractional akuyamba ndi manambala iliyonse ndipo kenako abwereza akuyamba.

ulamuliro A kuti ziyenera kulembedwa mu mawonekedwe a wamba kachigawo wopandamalire decimal chasintha kwa mitundu iwiri ya manambala. Net nthawi kachigawo kuwotcha chabe wamba. Mofanana ndi mapeto, muyenera n'kuzisintha: mu numerator nyengo lamoto, ndi chimene chachititsa ndi nambala 9, amene mobwerezabwereza nthawi zambiri monga manambala ali nyengo.

Mwachitsanzo, 0 (5). Lonse gawo chiwerengero kumeneko, kotero ine ayenera kuyamba fractional. The numerator za mbiri 5 monga chimene chachititsa mu 9. Zimenezo nchifukwa, yankho ndi nusu 5/9.

Ulamuliro mmene kulemba wamba nthawi decimal nusu, ali osokonezeka.

• Werengerani manambala fractional kwa nyengo. Iwo adzasonyeza chiwerengero cha ziro mu chimene chachititsa lapansi.

• Tayang'anani pa kutalika kwa nthawi. 9 zambiri za chimene chachititsa.

• Lembani chimene chachititsa: woyamba naini, ndiye ziro.

• Kudziwa numerator, m'pofunika kulemba kusiyana pakati pa manambala awiri. Amachepetsa ndi manambala onse pambuyo mfundo decimal, pamodzi ndi nyengo. Deductible - si nthawi.

Mwachitsanzo, 0,5 (8) - kulemba nthawi kachigawo decimal mu mawonekedwe a wamba. Mbali fractional nyengo patsogolo pali chithunzi chimodzi. Zero zikutanthauza padzakhala mmodzi. Mu nthawi yomweyo, wina chiwerengero chokha - 8. ndi zisanu ndi zinayi wina. Ndiko kuti, mu chimene chachititsa kulemba 90.

Kudziwa numerator wa 58 zofunika kuchotsera 5 akutembenukira 53. Yankho chitsanzo adzakhala ndi kulemba 53/90.

Kodi kumasulira tuzigawo twa amagwera decimals?

Njira yosavuta ndi nambala imene chimene chachititsa ndi nambala ya 10, 100 ndi zina zotero. Ndiye chimene chachititsa ali chabe anataya, koma pakati lonse ndi mbali fractional ya koma ndi.

Pali zinthu kumene chimene chachititsa mosavuta anatembenukira kwa 10, 100 ndi zina zotero. D. Mwachitsanzo, manambala 5, 20, 25. Iwo mokwanira kuchulukitsa ndi 2, 5 and 4, motero. Monga kuchulukitsa izo amadalira osati chimene chachititsa, koma numerator ndi nambalayi.

Pakuti zina zonse zothandiza ulamuliro losavuta: kugawa numerator ndi chimene chachititsa lapansi. amalire kapena nthawi decimal kachigawo: Pankhaniyi, awiri Mabaibulo a mayankho angapatutse.

Zochita ndi tuzigawo twa wamba

Kuwonjezera ndi wochotsera

Ndi iwo, ophunzira tikuuzidwa pamaso ena. Ndipo poyamba mu tuzigawo twa wa chimene chachititsa chomwecho, kenako osiyana. malamulo General zikhoza kuchepetsedwa ndondomeko zimenezi.

1. Pezani osachepera wamba angapo a denominators lapansi.

2. Lembani zinthu zina wamba tizigawo onse.

3. Awonjezere numerators ndi denominators zina mwa mfundozi.

4. Pindani (kuchotsera) ndi numerator ndi chimene chachititsa chiweruzo kukhala sichinasinthe.

5. Ngati numerator ndi zosakwana deductible yafupika, ndiye muyenera kupeza pamaso pathu chiwerengero losakanizika kapena kachigawo yoyenera.

6. Mbali yoyamba, lonse kufunika mmodzi. Kuwonjezera pa numerator chimene chachititsa. Ndiyeno kuchita wochotsera.

7. Wachiwiri - m'pofunika kugwiritsa ntchito lamulo wochotsera angapo ang'onoang'ono a zazikulu. Amene subtracted ku gawo la kuchotsera pa modulus amachepetsa, ndipo poyankha, cholembedwa "-".

8. Tiziwerenga pa chifukwa cha Kuwonjezera (wochotsera). Ngati inu kutenga mpirawo cholakwika, ndiye ife kusankha inteja gawo. Kuti ndi kugawanitsa numerator ndi chimene chachititsa lapansi.

Chulutsa ndi kugawikana

Pakuti nusu ya ntchito yawo sayenera kukhala ndi chimodzi chimene. Zimenezi zimatithandiza kukhazikitsa kanthu. Koma iwo amadalira kutsatira malamulo.

1. Pa chulutsa tuzigawo twa n'kofunika kuganizira chiwerengero cha numerator ndi chimene chachititsa. Ngati mwina numerator ndi chimene chachititsa ndi chinthu wamba, iwo akhoza kudula.

2. Awonjezere numerators.

3. Awonjezere denominators.

4. Ngati anatembenuka cancellative nusu, amaganiza kuti musinthe kachiwiri.

5. Pamene inu kugawanitsa, muyenera choyamba m'malo magawano ndi chulutsa, ndi divisor (kuwombera wachiwiri) - anawomberedwa kumbuyo (kusinthanitsa ndi numerator ndi chimene chachititsa).

6. Kenako mu chulutsa (ku sitepe 1).

7. Mu ntchito kumene chulukanani (kugawaniza) ayenera kukhala chiwerengero inteja, yotsirizira amadalira analembedwa tuzigawo twa zosayenera. Ndiko, ndi chimene chachititsa 1. Kenako tafotokozazi.

Zochita ndi decimals

Kuwonjezera ndi wochotsera

Kumene, inu nthawi zonse kusintha decimal ndi nusu zotukwana. Ndipo kanthu pa dongosolo kale anafotokoza. Koma nthawi zina ndi yabwino ntchito popanda kusintha. Ndiye malamulo a Kuwonjezera ndi wochotsera ndi chinzake.

1. Mwakufuna chiwerengero cha manambala mu gawo fractional adawerengedwa, ndiko kuti, pambuyo mfundo decimal. M'patseni ulibe chiwerengero cha ziro.

2. Lembani kachigawo kotero kuti koma anali koma.

3. Pindani (subtracted) monga manambala zachilengedwe.

4. Tengani koma.

Chulutsa ndi kugawikana

Nkofunika kuti palibe kufunika append ziro. Tuzigawo twa amayenera kuchoka mu mawonekedwe imene apatsidwa mu chitsanzo. Ndiyeno kupita malinga ndi dongosolo.

1. Pakuti kuchulukitsa tuzigawo twa kulemba munsili ena, Asamasamale mipatuliro lapansi.

2. Chulukitsani nambala mwachibadwa.

3. Ikani koma poyankha asonyeza ku mapeto pomwe Poyankha monga manambala ambiri ayenera tuzigawo twa zinthu zonse.

4. Kugawanitsa, muyenera choyamba atembenuke ndi divisor: kupanga ambirimbiri achilengedwe. Ndiko kuti, kuchulukitsa izo ndi 10, 100, ndi zina zotero. E., Malinga ndi kuchuluka kwa manambala mu gawo fractional wa wogawira.

5. Nambala yomweyo kuchulukitsa ndi lopeza lapansi.

6. Gawani decimal ndi chiwerengero achilengedwe.

7. Ikani koma poyankha pa nthawi imene mapeto a magawano lonse.

Kodi ngati chitsanzo chomwecho, pali mitundu iwiri ya tuzigawo twa?

Inde Masamu nthawi pafupipafupi zimene muyenera kuchita zochita pa wamba decimals. Mu ntchito iyi, pali njira ziwiri. M'pofunika mwachikulu kulemera manambala ndi kusankha bwino.

Njira yoyamba: kulingalira decimal wamba

Ndi abwino ngati magawano kapena kulanda tuzigawo twa chomaliza analandira. Ngati nambala osachepera wina amapereka mbali nthawi, njira imeneyi ntchito ndikoletsedwa. Choncho, ngakhale ngati inu sindimakonda ntchito ndi tuzigawo twa wamba, m'pofunika amaona.

Njira yachiwiri: kulemba decimals wamba

Njira yabwino ngati mbali pambuyo koma ndi manambala 1-2. Ngati pali zambiri, mukhoza ndi lalikulu kwambiri tuzigawo twa wamba ndi zolemba decimal kulola kuti awerenge ntchito msanga ndiponso mosavuta. Choncho nthawi zonse zofunika mwabwinobwino kuwunika ntchito ndi kusankha njira yosavuta ya kuthetsa.