2/20 as a Decimal 0.1 2/20 = 0.1 = 10% Copy 2/20 = 0.1 = 10%. Simplified: 1/10. Formula Used2 ÷ 20 = 0.1 Frequently Asked Questions What is 2/20 as a decimal?0.1.What is 2/20 as a percentage?10%.