Ukukhipha izinombolo ezinamadijithi amabili, ezinamadijithi amathathu kanye nezinombolo eziningi ngekholomu

Kule ncwadi, sizocubungula imithetho nezibonelo ezisebenzayo zokuthi izinombolo zemvelo (amadijithi amabili, amadijithi amathathu kanye namadijithi amaningi) zingasuswa kanjani kukholamu.

Imithetho yokukhipha

Ukuthola umehluko phakathi kwezinombolo ezimbili noma ngaphezulu nganoma iyiphi inombolo yamadijithi, ungenza ukususa ikholomu. Kwalokhu:

1. Bhala isiphetho emgqeni ophezulu kakhulu.
2. Ngaphansi kwayo sibhala i-subtrahend yokuqala - ngendlela yokuthi amadijithi afanayo azo zombili izinombolo angaphansi komunye nomunye (amashumi ngaphansi kwamashumi, amakhulu ngaphansi kwamakhulu, njll.)
3. Ngendlela efanayo, sengeza amanye ama-subtrahends, uma ekhona. Ngenxa yalokho, amakholomu anamadijithi ahlukene ayakhiwa.
4. Dweba umugqa ovundlile ngaphansi kwezinombolo ezilotshiwe, ozohlukanisa i-minuend kanye nekhishiwe emehlukweni.
5. Asiqhubekele ekukhipheni izinombolo. Le nqubo yenziwa kusukela kwesokudla kuya kwesokunxele, ngokwehlukana kukholomu ngayinye, futhi umphumela ubhalwa ngaphansi komugqa kukholamu efanayo. Kukhona ama-nuances ambalwa lapha:
   • Uma izinombolo eziku-subtrahend zingakwazi ukususwa edijithini ku-minuend, khona-ke sithatha ishumi kusuka kwidijithi ephezulu, bese kufanele sikucabangele lokhu kwezinye izenzo. (bona Isibonelo sesi-2).
   • Uma i-minuend inguziro, lokhu kusho ngokuzenzakalelayo ukuthi ukuze wenze ukususa, udinga ukuboleka kwidijithi elandelayo. (bona Isibonelo sesi-3).
   • Ngezinye izikhathi, ngenxa "yemalimboleko", kungase kungabi namadijithi asele kwidijithi ephezulu (bona Isibonelo sesi-4).
   • Ezimweni ezingavamile, lapho kukhona ama-deductibles amaningi, kuyadingeka ukuthi ungathathi eyodwa, kodwa ishumi nambili noma ngaphezulu ngesikhathi esisodwa. (bona Isibonelo sesi-5).

Izibonelo Zokukhipha Ikholomu

Isibonelo se-1

Susa ama-25 ku-68.

Isibonelo se-2

Ake sibale umehluko phakathi kwezinombolo: 35 kanye ne-17.

Incazelo:

Njengoba u-5 engenakususwa enombolweni yesi-7, sithatha ishumi elilodwa edijithini ebaluleke kakhulu. Kuvele 5 + = 10 15, 15-7 8 =. Futhi ungakhohlwa ukususa abayishumi abamatasa esigabeni esihambisanayo, okungukuthi 3-1=2-1=1.

Isibonelo se-3

Susa inombolo 46 ku-70.

Incazelo:

Ngoba u-6 akakwazi ukususwa ku-zero, sithatha ishumi elilodwa. Ngenxa yalokho, 0 + = 10 10, 10-6 4 =. Bese sicabangela eziyishumi ezimatasa ngemva kokukhipha edijithini elandelayo, okungukuthi 7-4-1 = 2.

Isibonelo se-4

Ake sithole umehluko phakathi kwezinombolo ezinamadijithi amabili kanye nezinombolo ezintathu: 182 kanye no-96.

Incazelo:

Ukukhipha u-2 enombolweni yesi-6 ngeke kusebenze, ngakho sithatha ishumi elilodwa. Siyathola 2 + = 10 12, 12-6 6 =. Isala emadazeni 8-1 7 =, kodwa u-7 akanakususwa ku-9 noma, ngakho siboleka ishumi kumakhulu: 7 + = 10 17, 17-9 8 =. Ngakho-ke, akukho lutho oluhlala emakhulwini ngokwawo, ngoba 1-1 0 =.

Isibonelo se-5

Susa ku-1465 izinombolo 357, 214 kanye no-78.

Incazelo:

Kulokhu, senza izenzo ezifanayo njengasezibonelweni ezedlule. Umehluko kuphela ukuthi lapho ukhipha kukholamu enamayunithi, akudingekile ukuthatha eyodwa, kodwa amashumi amabili ngesikhathi esisodwa, okungukuthi. 5 + = 20 25, 25-7-4-8 = 6. Ngesikhathi esifanayo, izohlala esigabeni seshumi I-4 (6-2).