(0:16)Mathematical Expressions: Use terms and operators to represent calculations, helping solve real-life problems.

(0:30)Order of Operations: Follow BIDMAS: Brackets, Indices, Division/Multiplication, and Addition/Subtraction to ensure correct calculation order.

(1:22)Left-to-Right Rule: When only Division/Multiplication or Addition/Subtraction are involved, solve from left to right.

(2:07)Nested Brackets: When multiple brackets are present, start with the innermost, then work outward, applying BIDMAS at each step for accurate results.