Order Ops Factory
A written expression stays fixed while an unambiguous evaluation trace follows grouped subexpressions, exponents, and equal-rank operations from left to right.
MathAges 9-13~11 min🎙️ Voice tutor
Play freeNo account needed
What your child will figure out
- Separate a fixed written expression from the evolving intermediate lines used to evaluate it.
- Resolve multiplication/division and addition/subtraction ties from left to right.
- Evaluate a parenthesised subexpression using the same internal operation rules.
- Compare valid traces for distinct expression structures that reach one target value.
The levels
- Open factory
Run one complete legal evaluation trace while the source rail stays locked.
- Precedence line
Evaluate multiplication before addition in a mixed expression.
- Tie line
Resolve division and multiplication at equal rank from left to right.
- Grouping line
Route a genuine subexpression before exponent and remaining operations.
- Target workshop
Evaluate and compare multiple fixed expression structures that reach 18.
Ready when they are.
Play Order Ops Factory free — no account, no card.
Play Order Ops Factory free