What is 10% of 20? 2 10% of 20 Copy 10% of 20 = 2. Formula UsedResult = (10 ÷ 100) × 20 = 2 Frequently Asked Questions What is 10% of 20?2. (10 ÷ 100) × 20 = 2.How to calculate 10%?Multiply by 0.1 (or multiply by 10 then divide by 100).