IsiNgesi sinamagama akhethekileyo abekelwe bucala ukuze asetyenziswe kumanani athile akwi-decimal number system nabizwa ngokuba ngamanani e--""powers of ten"". onke ke laa manani e-power of ten kwi-decimal number system asebenzisa isimboli engu-""1"" kunye nesimboli engu-""0"" kuphela. Umzekelo, ishumi lamashumi yinto enye neshumi eliphinda-phindwe kalishumi, okanye lilkhulu elinye. Ngokweesimboli, iba ngu-""10x10=100"". Kananjalo, ishumi lamakhulu liyinto enye neshumi eliphinda-phindwe ngekhulu, okanye singathi liwaka elinye. Ngokweesimboli ke sithi ngu- ""10 × 100 = 10 × 10 × 10 = 1000"". Namanye amanani e-power of ten numbers anamagama awo akhethekileyo.