1. The problem is to understand and apply the BODMAS rule to evaluate expressions correctly. 2. BODMAS stands for Brackets, Orders (powers and roots), Division and Multiplication (left to right), Addition and Subtraction (left to right). 3. This means when you see an expression, first solve anything inside brackets. 4. Then calculate any powers or roots. 5. Next perform all divisions and multiplications from left to right. 6. Finally, do all additions and subtractions from left to right. 7. For example, to evaluate $7 + (6 \times 5^2 - 3)$: - First evaluate power: $5^2 = 25$ - Then inside brackets: $6 \times 25 - 3 = 150 - 3 = 147$ - Now add outside brackets: $7 + 147 = 154$ 8. The final answer using BODMAS is $154$.