Follow the order of operations to solve each expression. Use BODMAS / PEMDAS rules. Solve brackets (parentheses) first, then powers and square roots. Next, solve multiplication and division from left to right. Finally, solve addition and subtraction from left to right. Choose the correct answer from four options. Select a mode: Easy, Normal, Hard, or Pro. Solve 15 questions to advance to the next level. Harder modes give more XP.