Ndi dzina la Kuzungulira (kapena truncation) amadziwika ndi Kuchepetsa kuchuluka kwa malo amalo kuti nambala yosakwanira ipereka, ndikuchepetsa ma decimals ambiri momwe wogwiritsa ntchito amasankhira njira yodziwika bwino.
Nthawi zina, maimidwe amachotsedweratu, ndikusintha nambala yomwe siili decimal kukhala integer. Ndikofunikira kufotokoza kuti kuchotsa maimidwe a '0' omwe amapezeka kumapeto sikukugwirizana ndi njira yozungulira, popeza msonkhanowu ukunena kuti amangochotsedwa pamenepo, ndipo kuphatikiza iwo kumangochitika mwadala.
M'munda wa masamu, amagwiritsidwa ntchito kwambiri pakupanga masamu ndi kusanthula, komwe kumakhudza maakaunti, ma equation, ndi njira zosanthula zamitundu zosiyanasiyana. Komabe, kugwiritsa ntchito njirazi ndikosiyanasiyana ndipo kumaloza kumadera angapo, pakati pake pali mavuto omwe amalumikizidwa kwambirimoyo watsiku ndi tsiku. Nthawi izi, monga kulondola kwenikweni kwa zotsatira sikofunikira kwenikweni, koma zofunikira zomwe zimaphatikizidwa, zinthu zomwe sizili zofunikira kwenikweni pamasamu monga kuyerekezera kapena kuzungulira kumawonekera.
Pulogalamu ya kuchita kuzungulira Zimatanthauza kusinthitsa nambala imodzi kukhala ina, yomwe malinga ndi lingaliro lamasamu la lamulo lamanambala lingatanthauze kuyisintha kukhala nambala wamkulu kapena wocheperapo iye. Milandu yomwe ikuthandizira kuzungulira imaganiza kuti maimidwe omwe sanasiyidwe ndiosafunikira kwenikweni kuposa mwayi wosawonekera. Ichi ndichifukwa chake, kutengera mlanduwo, kuchuluka kwa maimidwe omwe amasankhidwa kuti asiyidwe azikhala osiyana.
Mulimonsemo, komabe ndondomeko yozungulira ndichofanana: chinthu choyamba kuchita ndikusankha kuchuluka kwa malo amalo omwe mukufuna kuphatikiza. Ndiye decimal pambuyo yomaliza yomwe mukufuna kuchoka imawonedwa, ndipo imafanizidwa: ngati ndi nambala yochepera 5, decimal yapitayo ipitilira chimodzimodzi (nambala yozungulira ili yocheperako kuposa yopanda malire), komano, ngati chiwonetserochi chikuwoneka kuti ndi chachikulu kuposa kapena chofanana ndi 5, decimal yapita iwonjezedwa ndi m'modzi kuti abweze pozungulira. Izi zitanthauza kuti chiwerengerochi chidzakhala chachikulu kuposa chija chomwe sichinachitike, ndipo chili ndi vuto lina: ngati nambala yomwe iyenera kuwonjezedwa ndi imodzi ndi 9, ndiye kuti ikupita ku 10, ndikuwonjezera manambala am'mbuyomu ndi m'modzi , ndikuchotsanso decimal imodzi kuchokera pa yomwe cholinga chake ndi kuzungulira.
Zomwe zimachitika pozungulira zimakhala mu manambala amakanthawi. Kumeneko, kuchepa kwa manambala a decimal kumatanthauza kuti pokhapokha ngati mukufuna kugwiritsa ntchito chizindikiro cha manyuzipepala, nambala yake iyenera kuzunguliridwa. Pankhani ya magawo awiri mwa atatu, mwachitsanzo, kuzungulira kumachitika posankha kuchuluka kwa manambala omwe akuwonetsedwa ndikuyika nambala sikisi mpaka imodzi isanachitike, ndipo nambala yomaliza 7, popeza ndi '6' zopanda malire. Ngati mukufuna kuzungulira popanda malo aliwonse amsinkhu, komabe, kuzungulira kumakupatsani 1.
- 3.9, yosonyezedwa popanda decimal, 4.
- 7.1, yofotokozedwa popanda decimal, 7.
- 0.5, yofotokozedwa popanda decimal, 1.
- 512.312513513, yowonetsedwa m'malo asanu ndi limodzi a decimal, 512.312514.
- 124,562, yosonyezedwa popanda decimal, 125.
- 2002.5, yosonyezedwa popanda malo aliwonse ampikisano, 2003.
- 913.009, yofotokozedwa ndi decimal, 913.0 (0 imaphatikizidwa ndikusaka kofotokozera kuti kufotokozere ndi decimal).
- 313,948, idafotokozedwera m'malo awiri osungira, 313.95.
- 31.13, yofotokozedwa kumalo amodzi, 31.1.
- 0.94, yosafotokozedwa popanda 1, 1.
- 88.19, idawonetsedwa kumalo amodzi, 88.2.
- 777.77777777, yofotokozedwa popanda decimal, 778.
- 304.698, yowonetsedwa m'malo awiri osanjikizana, 305.70 (0 imaphatikizidwa ndi lingaliro lofotokozera izi m'malo awiri osanjikizira)
- 32.49, idawonetsedwa kumalo amodzi, 32.5.
- 617.824917, idawonetsedwa m'malo anayi, 617.8249.
