To solve each expression, follow the steps in order. Use the BODMAS/PEMDAS rule. First expand the brackets (parentheses), then the powers and square roots. Then expand multiplication and division from left to right. Finally, solve addition and subtraction from left to right. Choose the correct answer from the four options. Select mode: Easy, Normal, Hard or Pro. Solve 15 questions to advance to the next level. More difficult modes give you more XP.