CCSS.Math.Content.6.EE.A.2a
The Standard
Write expressions that record operations with numbers and with letters standing for numbers.
Common Core State Standards for Mathematics
Teacher's field guide
What This Standard Means
What Students Need to Do
- Students translate words describing a calculation into an algebraic expression. They use letters for unknown or changing numbers and place operations in the correct order.
What Mastery Looks Like
- Students correctly turn spoken or written calculations into expressions using numbers, variables, and operation symbols. They preserve the intended order, especially with subtraction and division, and do not add an unnecessary equals sign.
Common Misconceptions
- Students often reverse subtraction or division because they follow the phrase order instead of the operation order. They may treat a letter as a label rather than a number, or insert an equals sign when only an expression is needed.
How to Assess It
- Exit ticket: Write an expression for the cost of x notebooks at $3 each plus a $2 folder. Label what x represents.
Lesson moves
Ways to Teach It
Give pairs number, variable, and operation cards to build expressions from spoken phrases, then compare the order of symbols.
Ask students to explain why “subtract n from 12” becomes 12 minus n, not n minus 12.
Play an expression matching game with phrase cards and expression cards, including distractors that reverse subtraction or division.
Present a phone plan with a $20 fee plus $5 per gigabyte, and have students write an expression for g gigabytes.
Free download
Printable 6.EE.A.2a Worksheet
A ready-to-print activity worksheet aligned to CCSS.Math.Content.6.EE.A.2a, with an answer key for the teacher on its own page. No account needed.
PDF, US Letter, prints cleanly in black and white.
Download the worksheetLearning progression
Where This Standard Sits
Before This Standard
If students are struggling here, check these first.
- CCSS.Math.Content.5.OA.A.2
Students extend recording numerical calculations to using letters as unknown or varying numbers in the same operation structures.
- CCSS.Math.Content.5.OA.A.1
Grouping symbols and evaluating numerical expressions support writing clearer algebraic expressions when operations must be combined in a specific order.
- CCSS.Math.Content.4.OA.A.2
Using symbols for unknowns and equations in comparison problems supports translating operations into expressions with letters.
What This Unlocks
Mastery here sets students up for these next.
- CCSS.Math.Content.6.EE.A.2
Recording operations with numbers and letters is the writing piece needed before reading and evaluating algebraic expressions.
- CCSS.Math.Content.6.EE.A.2b
Writing expressions from operations supports recognizing the operations, numbers, and letters that become terms, factors, coefficients, and grouped parts.
- CCSS.Math.Content.6.EE.A.2c
Writing expressions with variables supports seeing what operations an expression contains before substituting values and following order of operations.
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