5/25 as a Decimal 0.2 5/25 = 0.2 = 20% Copy 5/25 = 0.2 = 20%. Simplified: 1/5. Formula Used5 ÷ 25 = 0.2 Frequently Asked Questions What is 5/25 as a decimal?0.2.What is 5/25 as a percentage?20%.