Kunyange uye shamisa nhamba. Pfungwa grade nhamba

Saka, Ndichaenda kutanga nyaya yangu kunyange nhamba. Ndezvipi nhamba dziri kunyange? Chero integer inogona huviri hakuna vakasara, runoonekwa kunyange. Uyezve, kunyange nhamba vachipedzisira mumwe vanoverengeka digit of 0, 2, 4, 6 kana 8.

Somuenzaniso: -24, 0, 6, 38 - vose kunyange nhamba.

M = 2K - talk payakavakirwa kunyora kunyange nhamba, apo k - chiri integer. mutoo uyu kungadiwa kugadzirisa matambudziko akawanda kana equations zviri zvokutanga mamakisi.

Pane imwe mhando nhamba yakakura hwaJehoshafati masvomhu - icho vasinganzwisisike nhamba. Chero nhamba kuti hazvigoni huviri pasina zvasara, uye kana huviri vakasara chimwe, inonzi shamisa. Chero zvavo chinoguma mune imwe nhamba idzi: 1, 3, 5, 7 kana 9.

MUENZANISO shamisa nhamba 3, 1, 7 uye 35.

n = 2K + 1 - nzira yemaitiro iyo inogona kushandiswa vanyore chero zvinoshamisa nhamba, apo k - chiri integer.

Kuwedzera uye kubvisa pamusoro shamisa uye kunyange nhamba

Mukuwedzera (kana kubvisa) kunyange uye shamisa nhamba dzine zvimwe kakawanda. We amupa tichibatsirwa tafura, riri pazasi, kuitira kuti zvive nyore kunzwisisa uye kuyeuka zvinhu.

Odd uye kunyange nhamba achazvikudza Saizvozvowo, kana subtracted, pane muchidimbu navo.

Chokuwanziridza pamusoro shamisa uye kunyange nhamba

Kana vachiwedzera kunyange uye shamisa nhamba vanoita nomuzvarirwo. Munoziva pachine nokuwana mugumisiro Zvinoshamisa kana kunyange. The tafura pazasi anoratidza ose zvichibvira nzira kuti nani kuitwa mashoko.

Zvino funga zvinoyangarara pfungwa nhamba.

Grade notation nhamba

Grade zvikamu zviduku - vari kuwanda pamwe dhinomineta 10, 100, 1000 uye zvichingodaro, izvo zvakanyorwa pasina dhinomineta. The integer Chikamu vaparadzana grade kuti koma.

Somuenzaniso: 3.14; 5.1; 6.789 - zvose decimals.

With decimals anogona kubereka siyana kwemasvomhu akavhiyiwa dzakadai enzaniso, Uyezve, kubvisa, chokuwanziridza uye kupesana.

Kana uchida voparadza zvikamu zviduku maviri, tanga equalize uwandu grade nzvimbo, Kutaura navo mumwe zeros, uye ipapo, achikanda koma, enzanisa vave integers. Funga muenzaniso uyu. Enzana 5.15 uye 5.1. Chokutanga inofananidza chakapatsanurwa: 5.15 uye 5.10. Zvino isu kuanyora sezvo integers: 515 uye 510, saka, nhamba yokutanga mukuru wechipiri, ipapo 5.15 mukuru 5.1.

Kana uchida muchidimbu zvikamu zviduku maviri, kutevera mutemo nyore ichi: kutanga kuguma zvikamu zviduku uye kuwedzera kutanga (semuenzaniso) a hundredths mashomanana, ipapo chegumi, ipapo boka rose. With mutemo uyu, unogona kutapudza nyore uye muwande decimals.

Asi iwe unofanira kugovera zvikamu zviduku sezvo integers, pakupera kuverengwa, apo unofanira kuisa koma. Kuti, tanga vagovane integer chikamu, uye ipapo - the fractional.

Just decimals zvinofanira vakagumisa. Kuti aite izvi, sarudza kuti chii muchikwata muchida kumativi bara, uye kutsiva zvakakodzera nhamba digits pamwe zeros. Yeuka, kana inotevera okuyerera nhamba iyi yakanga iri kuwanda 5 kusvika 9 yemubatanidzwa, wokupedzisira digit, iyo inogara incremented. Kana kutevera ichi zvinoyerera mufananidzo waiva zvinobva 1 kusvika 4 yemubatanidzwa, wokupedzisira vasara kuchinja.