Bw’oba oyagala okumanya obuwanvu bwe buli wansi w’okukyusa ku minzaani ez’enjawulo, gezaako kino, .ekintu ekikyusa obuwanvu bwa minzaani, kituyamba okubala obuwanvu mu bwangu.
Ekibalirizi kino kituyamba okuzuula ensonga ya minzaani wakati w’obuwanvu bubiri, kimala kuyingiza buwanvu bubiri, kijja kubala ensonga ya minzaani mu ngeri ey’otoma, kiwagira yuniti z’obuwanvu ez’enjawulo (mm, cm, m, km, mu, ft, yd, mi), nga kwotadde n’okukwatagana ekifaananyi ekirabika n’ensengekera, okutegeera okwangu enkola y’okubalirira n’ekivaamu.
Mu bifaananyi bya geometry bibiri ebifaanagana, ensonga ya minzaani gwe mugerageranyo gw’enjuyi zaabwe ezikwatagana, okugabanya obuwanvu obubiri obukwatagana obw’enjuyi kijja kuwa omugerageranyo, okugeza
4 ne 10 zigabanyizibwamu 2
Obuwanvu A : 4 ÷ 2 = 2
Obuwanvu B : 10 ÷ 2 = 5
kale ensonga ya minzaani okuva ku A okutuuka ku B eri 2:5
12 ne 3 zigabanyizibwamu 3
12 ÷ 3 = 4
3 ÷ 3 = 1.Ekitundu ekituufu
Omugerageranyo gwa 12:3 ogwanguyiziddwa guli 4:1
kale ensonga ya minzaani ya yinsi 12 okutuuka ku yinsi 3 eri 4:1
1⁄4 mu = 1 ÷ 4 = 0.25 mu
Ffuuti 2 = 12 × 2 = obuwanvu bwa yinsi 24
1 ÷ 0.25 = 4
24 × 4 = 96 nga bwe kiri
Omugerageranyo gwa 0.25:24 ogwanguyiziddwa guli 1:96
kale ensonga ya minzaani ya yinsi 1⁄4 okutuuka ku ffuuti 2 eri 1:96