Expressions and equations
6.EE.A.2.C
Evaluate expressions, including those arising from formulas, using the conventional order of operations.
Practice for this standard
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Order of operations
Brackets, exponents and left-to-right rules, with the classic traps kids fall into.
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Pre-algebra
One-step equations with a letter in them, and undoing an operation to solve.
Official wording and the full standard: CCSS.MATH.CONTENT.6.EE.A.2.C