Order of operations
Order of operations & word problems
Japanese school year: Elementary 4
What you learn
Students learn the rules for order of operations: calculate inside parentheses first, and perform multiplication and division before addition and subtraction. Operations with the same priority are solved from left to right. This essential knowledge ensures accuracy when evaluating complex expressions with mixed operations.
Key points
When there are parentheses ( ), always calculate the inside of the parentheses first.
When there are no parentheses, do multiplication and division before addition and subtraction.
When operations have the same priority, calculate them in order from left to right.
Worked example
Expression:
Choose a set to practice.