Mathematics
Multiplication & Division
Conceptual
10–11 yrs
Order of operations
运算顺序
Description
Understand and apply the conventional order of operations (PEMDAS/BODMAS) to carry out calculations involving the four operations
Mastery Evidence
- Explain why 8 + 2 × 5 = 18 (not 50) by referencing multiplication before addition
- Evaluate a multi-step expression like 12 ÷ 3 + 4 × 2 correctly as 12
- State the correct order: brackets, then orders/exponents, then multiplication/division (L→R), then addition/subtraction (L→R)
Assessment Prompt
If your child sees '8 + 4 × 3', do they get 20 — not 36 — because they know to do the multiplication before the addition?
