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Door 11 · Grade 5

🔢 Order of Operations (PEMDAS/BODMAS)

Parentheses FIRST

▶ Play Door 11

PEMDAS/BODMAS Rules

Why Order Matters:
3 + 4 × 2 = ?
If you add first: (3+4)×2 = 7×2 = 14 If you multiply first: 3+(4×2) = 3+8 = 11 Which is correct? MULTIPLY first!
PEMDAS (USA) / BODMAS (UK):
LetterStands ForMeaningP / BParentheses / BracketsDo inside ( ) firstE / OExponents / OrdersPowers and rootsM / DMultiplication / DivisionLeft to rightD / MDivision / MultiplicationLeft to rightA / SAddition / SubtractionLeft to rightRemember: Please Excuse My Dear Aunt Sally

Worked example

Problem: Solve 8 + 2 × 5

  1. Multiplication first: 2 × 5 = 10
  2. Then add: 8 + 10 = 18
  3. Answer: 18

Answer: Answer: 18