Grade 5ChallengeOrder of Operations

Order of Operations · Challenge problem

For how many of these six expressions can the parentheses be removed without changing the value?

(12 - 4) - 3 \qquad 12 - (4 - 3) \qquad (12 \div 4) \times 3

12 \div (4 \times 3) \qquad (12 + 4) \div 4 \qquad 12 + (4 \times 3)