5/10 as a Decimal 0.5 5/10 = 0.5 = 50% Copy 5/10 = 0.5 = 50%. Simplified: 1/2. Formula Used5 ÷ 10 = 0.5 Frequently Asked Questions What is 5/10 as a decimal?0.5.What is 5/10 as a percentage?50%.