1. 0,9 = %

persen artinya per seratus
1. 0,9 = 0,9/1 = 90/100 = 90% ……………dikali 100
2. 72/60= 12/10 = 120/100 = 120% …….. dibagi 6 trus dikali 10
3. 42/56= 3/4 = 75/100 = 75% …………. dibagi 14 dan dikali 25
4. 5/8= 62,5/100 = 62,5% …………..dikali 12,5
5. 21/70= 3/10 =30/100 = 30%
6. 1.375= 137500/100 = 137500%