Enye indlela yokucinga ngamanani a-negative, kukusebenzisa umgca-manani. kulo mgca-manani ke kukho indawo esiyibiza u-zero. Size ke emva koko sibhale ukubonisa (senze i-label) (sibhale igama) yonke i-point esemgceni sijonge okokuba ingaba ikude kangakanani na kwicala langasekunene ukusuka kwi-point akuyo u--0, umzekelo, i-point engu-inye (u-point one) uyi-centimeter enye ngokomgama ukuya ngasekunene, i-point engu-zimbini (u-point two) uzisentimitha ezimbini ukuya ngasekunene.