8/10 as a Decimal 0.8 8/10 = 0.8 = 80% Copy 8/10 = 0.8 = 80%. Simplified: 4/5. Formula Used8 ÷ 10 = 0.8 Frequently Asked Questions What is 8/10 as a decimal?0.8.What is 8/10 as a percentage?80%.