Tsarin lambar ƙima shine tsarin lamba goma na tushe-goma wanda ke amfani da lambobi goma (0, 1, 2, 3, 4, 5, 6, 7, 8, 9) don wakiltar kowane ƙima na lamba. A cikin wannan tsarin, ƙimar lambobi ya dogara da matsayinsa a cikin lamba. Kowace lambobi a cikin lambar goma tana wakiltar ƙarfin 10, farawa daga mafi girman lambobi. Misali, a lamba 123, lamba 3 tana wakiltar darajar raka'a 3, lamba 2 tana wakiltar ƙimar dubu biyu, lambobi 1 kuma tana wakiltar ƙimar ɗari 1. Ana amfani da maki goma don raba sashin lamba daga ɓangaren juzu'i na lamba goma. Ana amfani da tsarin lamba na goma a cikin rayuwar yau da kullun kuma shine tsarin lamba da aka fi amfani dashi a duniya.