Percentages

Learn percentages from the ground up and keep going until they feel obvious. Twelve short lessons explain the ideas one at a time, then forty questions across five levels take you from reading 25% to reverse percentages and compound change. Every answer comes with a worked solution and a tip, and levels unlock as you score 80%. Practice one skill at a time, take a mixed quiz against the clock, or work through real-life sets on shopping, money, school, business and statistics. A countdown you control warns you before time runs out, and whatever you miss is collected in Mistakes until you get it right twice. Formulas, mental-maths shortcuts and a percent-fraction-decimal table are always a tab away. Session history, level mastery and achievements show exactly where you stand. Fully offline, with no account, no ads and no tracking.