Nkqu kunye amanani angumnqakathi. Ingcamango yamanani wokugqibela

Ngoko ke, ndiza kuqala ibali lam kunye namanani. Ziziphi amanani baze? Naliphi na inani elipheleleyo ezinokuthi zibe akukho amasalela, uthathwa nokuba. Ngaphezu koko, kwanokuba amanani aphela kwelinye inani amivo mi-0, 2, 4, 6 okanye 8.

Umzekelo: -24, 0, 6, 38 - zonke namanani.

m = 2k - ukubhala indlela jikelele namanani, apho k - yinto elipheleleyo. Le ndlela inokuba kufuneka ukusombulula iingxaki ezininzi okanye zibalo kumabakala aphantsi.

Kukho olunye uhlobo amanani kummandla omkhulu kwimathematika - lilinani elingumnqakathi. Naliphi na inani abangenakwahlulelana ibe ezimbini ngaphandle intsalela, yaye xa yahlulwe kwintsalela ezimbini mnye, ebizwa limnqakathi. Nayiphi kubo iphela kwenye yezi nombolo: 1, 3, 5, 7 okanye 9.

UMZEKELO amanani angumnqakathi 3, 1, 7 no-35.

n = 2k + 1 - ifomula ezinokuthi zisetyenziswe ukuze abhale naliphi na inani elingumnqakathi, apho k - yinto elipheleleyo.

Ukudibanisa nokuthabatha amanani angumnqakathi

Ukongeza (okanye nokuthabatha) of even and odd numbers abanye njalo. Siye phambi ngoncedo kwetafile, nto leyo ngezantsi, ukuze kube lula ukuqonda kwaye ukhumbule umbandela.

amanani angumnqakathi izakuziphatha ngendlela efanayo, ukuba sisuswe, kunokuba uwachaze.

Multiplication amanani angumnqakathi

Xa phinda even and amanani angumnqakathi ukuziphatha ngokwendalo. Uyazi kwangaphambili izakufumana umphumo lingumnqakathi okanye. Le theyibhile ingezantsi ibonisa zonke iinketho ukuba nokwenziwa ngcono iinkcukacha.

Ngoku cinga lencopho amanani ingongoma.

notation Decimal lwamanani

amaqhezu ezishumi - iinombolo kunye idinomineyitha-10, 100, 1000 njalo njalo, ezithi zibhalwe ngaphandle kwinani elingezantsi. Inxenye bahlukana lokugqibela ukuya isiphumlisi.

Umzekelo: 3.14; 5.1; 6.789 - zonke ngenani leshumi.

Nge idesimali bakwazi ukuvelisa imisebenzi eyahlukeneyo imathematika ezifana kuthelekiswa, ukudibanisa, ukuthabatha, phinda nokwahlula-hlula.

Ukuba ufuna level amaqhezu amabini, kuqala alinganayo inani needesimali, bebanika ukuba omnye amaqanda, yaye emva koko, nokuphosa ikoma, thelekisa bona integers. Xiya xikombiso lexi. Efana 5.15 no 5.1. Ukuqala ezanele iqhezu: 5.15 kunye 5.10. Ngoku bhala babe integers: 515 no-510, ngoko ke, inani lokuqala lingaphezulu yesibini, ngoko 5.15 mkhulu 5.1.

Ukuba ufuna ukushwankathela amaqhezu amabini, landela lo mgaqo elula: uqale ekupheleni amaqhezu kwaye dibanisa gqo (umzekelo) a hundredths zokuqala ezimbalwa, ngoko ke yeshumi, ngoko ke yonke. Ngesi mthetho, ungenza ngokulula uthabathe uze nande needesimali.

Kodwa kufuneka ukuba ayahlule amaqhezu integers, ekupheleni ngokubala, apho kufuneka ukuba abeke isiphumlisi. Oko kukuthi, mabayahlule kuqala inxalenye elipheleleyo, uze emva koko - ukuba iqhezu.

Nje ngenani leshumi kufuneka elirhangqiweyo. Ukuze wenze oku, khetha oko oludidi ofuna ukurhangqa shot, kwaye endaweni inani elifanelekileyo amanani kunye amaqanda. Khumbula, ukuba oko kuchitha elandelayo yale nani yaba kuluhlu ka-5 ukuya ku-9 ebandakanya wonke, umvo wokugqibela, oku kuhleliyo incremented. Ukuba ngokulandela eli nani ukubhobhoza waba kuluhlu ukusuka ku-1 ukuya ku-4 ebandakanya wonke, nabokugqibela eseleyo ingatshintshanga.