GPT-5.5 vs Kimi K3 for revision & study

Mnemonic: **“Group first, raise powers next, then work left-to-right through × and ÷, and finally work left-to-right through + and −.”**

The **division/multiplication order matters only when they appear together in a chain**, because they have equal priority and must be done **from left to right**—for example, \(12 ÷ 3 × 2 = 8\), not \(2\).

**Mnemonic:** "**B**ig **I**diots **D**on't **M**ake **A**wesome **S**andwiches" — **B**rackets, **I**ndices, **D**ivision/**M**ultiplication, **A**ddition/**S**ubtraction.

*(Alternative if you prefer something sillier: "**B**adgers **I**n **D**apper **M**asks **A**ttend **S**oirees.")*

**When D/M order matters:** Division and multiplication have *equal* priority, so the order only matters when both appear in the same expression — in which case you work left to right, meaning 20 ÷ 5 × 2 = 8, not 2.