I-Rhyme Ejikelezayo- Ezine noma ngaphansi ziyeke ziphumule, ezinhlanu noma ngaphezulu ziyeke zibe buhlungu. Okune noma ngaphansi let's rest and Five noma ngaphezulu let it up kuyimilolozelo emihle ehlanganisayo ukusiza abafundi bakhumbule imithetho yokuzungezisa. Lengisa lawa maphosta ekilasini lakho noma wenze amakhophi ukuze abafundi bawanamathisele ezincwadini zabo zokubhalela! Jabulela!
Hereof, Siyini isibonelo se-roundoff? Ekuqoqeni izinombolo, isibalo sokugcina esigciniwe kufanele sikhule ngo-1 uma isibalo sokuqala sehlile sikhulu kuno 5. Isibonelo, uma kufanele kugcinwe amadesimali amabili kuphela, u-6.4872 uba ngu-6.49. Ngokufanayo, u-6.997 uba ngu-7.00.
Uzihlanganisa kanjani izinombolo ks2? Ukusondeza inombolo ibe yi-100 eseduze, buka idijithi yamashumi. Uma idijithi yamashumi ingu-5 noma ngaphezulu, sondeza. Uma idijithi yamashumi ingu-4 noma ngaphansi, yehlisele phansi.
Ukwengeza Yini i-round off kwizibalo? Yini i-Rounding Off? Ukuhlehlisa kusho inombolo yenziwe yaba lula ngokugcina inani layo lingaguquki kodwa eduze kwenombolo elandelayo. Yenzelwa izinombolo eziphelele, kanye namadesimali ezindaweni ezihlukahlukene zamakhulu, amashumi, okweshumi, njll. Ukufinyezwa kwezinombolo kwenziwa ukuze kulondolozwe amanani abalulekile.
Liyini inani eliyindilinga? Ukujikeleza izindlela ukwenza inombolo ibe lula kodwa igcine inani layo lisondele kulokho ebiyikho. Umphumela awunembile kangako, kodwa kulula ukuwusebenzisa. Isibonelo: u-73 uzungelezwa kwabayishumi abaseduze ngu-70, ngoba u-73 useduze nama-70 kunama-80.
Ngabe u-5 usongelwe phezulu noma phansi?
Umthetho okufanele uwukhumbule uthi: “Uma idijithi ingaphansi kuka-5, zungeza idijithi edlule; uma kunjalo 5 noma ngaphezulu, zungeza idijithi yangaphambilini.” Ukusondeza idijithi phansi kusho ukuyishiya ingashintshiwe; ukusondeza idijithi phezulu kusho ukuyikhulisa ngeyunithi eyodwa.
Kuyini ukufinyezwa kwenombolo? Ukuzungeza kusho ukwenza a inombolo elula kodwa igcina inani layo lisondele kulokho ebiyikho. Umphumela awunembile kangako, kodwa kulula ukuwusebenzisa. Isibonelo: u-73 uzungelezwa kwabayishumi abaseduze kakhulu ngu-70, ngoba u-73 useduze nama-70 kunama-80. Kodwa u-76 ukhuphukela ku-80.
Ithini inombolo ye-roundoff? Ukuqedwa kusho inombolo yenziwa ibe lula ngokugcina inani layo lingashintshile kodwa eduze nenombolo elandelayo. Yenzelwa izinombolo eziphelele, kanye namadesimali ezindaweni ezihlukahlukene zamakhulu, amashumi, okweshumi, njll. Ukufinyezwa kwezinombolo kwenziwa ukuze kulondolozwe amanani abalulekile.
Uwufundisa kanjani ukuzungeza unyaka wesi-5?
Futhi Uzenza kanjani izinombolo eziphelele zezingane?
Ingabe i-5 iyasondeza phezulu noma phansi?
Umthetho okufanele uwukhumbule uthi: “Uma idijithi ingu ngaphansi kuka-5, zungeza idijithi yangaphambilini; uma ingu-5 noma ngaphezulu, sondeza idijithi yangaphambilini.” Ukufinyeza idijithi phansi kusho ukuyishiya ingashintshiwe; ukusondeza idijithi phezulu kusho ukuyikhulisa ngeyunithi eyodwa.
Ufinyelela kanjani ku-9?
Ungakwazi ukwehlisela uziro?
Ukuzungezisa ukuya kuqanda izindawo zedesimali kusho ukuzungeza uye kweseduze inombolo enezindawo ezinguziro ngemva kwephoyinti ledesimali, noma ngamanye amazwi ukuzungeza ukuya kunamba eseduze. Idijithi enguziro engenazo izindawo zedesimali imelela uziro ovamile onguziro.
Kungani sihlanganisa izinombolo?
Izinombolo ezijikelezayo izenza zibe lula futhi zibe lula ukuzisebenzisa. Nakuba enokunemba kancane, amanani awo asasondele kulokho ayeyikho ekuqaleni. Abantu bazungeza izinombolo ezimweni eziningi ezahlukene, okuhlanganisa nezimo eziningi zomhlaba wangempela ozozithola ukuzo njalo.
Ingabe wenza u-1.5 phezulu noma phansi? Indlela evamile iwukuba round enombolweni eseduze noma eyinqaba. Ngokuvamile kukhethwa inombolo eyinqaba, ngakho-ke u-0.5 kanye no-1.5 ukuzungeza kuye ku-1. Kuyindlela yokusabalalisa ukusondeza nokuhlehlisa ngokulingana kwekholomu elandelayo.
Uzungeza kanjani isinyathelo ngesinyathelo? Isinyathelo 1: Biyela inani lendawo yedijithi ezofinyezwa. Lena idijithi eyindilinga. Isinyathelo sesi-2: Bheka idijithi engumakhelwane kwesokudla. Isinyathelo sesi-3: a) Uma idijithi engumakhelwane ingaphansi kwesihlanu (0 – 4), gcina idijithi ezungezayo ifana.
Ingabe ufika ngo-4?
Uma usondeza inombolo "uzosondeza" noma "uzosondeza phansi". Uma inombolo oyisondezayo iphakathi kuka-0-4, wehlisela enombolweni elandelayo elandelayo. Uma inombolo ingu-5-9, usondeza inombolo uyifinyelele enombolweni ephezulu kakhulu. Uma sisondeza inombolo, siyisondeza kunani lendawo eliseduze.
Ngiyifundisa kanjani ingane yami izinombolo eziyindilinga? Indlela engcono kakhulu yokuqala iwukumodela ukuzungeza usebenzisa okubili-izinombolo zedijithi kanye nokukhombisa izingane ukuthi zingafinyezwa kanjani kweyishumi eseduze. Lapho usebenza nengane yakho, mcele ukuthi acabange ngenombolo efinyezwayo, bese ubuza ukuthi yini eza ngaphambi nangemuva kwaleyo nombolo, bese ugcwalisa lezo zinombolo ezimbili kuphela.
Ithini inombolo yokufinyezwa kuka-89?
Ama-89 aqoqelwe kwabayishumi abaseduze ngu 90.
Iyini imithetho yokuqoqa? Nawu umthetho ojwayelekile wokuqoqa:
- Uma inombolo oyisondezayo ilandelwa ngu-5, 6, 7, 8, noma 9, sondeza inombolo phezulu. Isibonelo: 38 ukufinyezwa kwabayishumi abaseduze ngu-40. …
- Uma inombolo oyizungezayo ilandelwa ngu-0, 1, 2, 3, noma 4, zungeza inombolo iye phansi. Isibonelo: ama-33 aqoqelwe eshumini eliseduzane ngu-30.
Iyiphi indlela elula yokufundisa ukuzungeza?
Uyini umthetho ojwayelekile wokufinyeza izinombolo? Umthetho ojwayelekile wokuqeda Umthetho ojwayelekile uthi For inombolo emashumini, sihlanganisa amashumi. Ngenombolo ngekhulu, sihlanganisa ikhulu. Ngenani ezinkulungwaneni, sihlanganisa izinkulungwane.