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    Identify when two expressions are equivalent (i.e., when the two expressions name the same number regardless of which value is substituted into them). For example, the expressions y + y + y and 3y are equivalent because they name the same number regardless of which number y stands for...

     
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    Write and evaluate numerical expressions involving whole-number exponents.

    Write, read, and evaluate expressions in which letters stand for numbers.

    Evaluate expressions at specific values for their variables. Include expressions that arise from formulas in real-world problems. 

     
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    Write, read, and evaluate expressions in which letters stand for numbers

    Write expressions that record operations with numbers and with letters standing for numbers.

    Identify parts of an expression using mathematical terms (sum, term, product, factor, quotient, coefficient); view one or more parts of an expression as a single entity. 

     
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    Write and evaluate numerical expressions involving whole-number exponents.

     
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    Interpret expressions that represent a quantity in terms of its context. Interpret parts of an expression, such as terms, factors, and coefficients, in context.  Write and evaluate numerical expressions involving whole-number exponents.

    Evaluate expressions at specific values for their variables. Include expressions that arise from formulas in real-world problems. Perform arithmetic operations, including those involving whole-number exponents, in the conventional order when there are no parentheses to specify a particular order (Order of Operations).

     
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    Write and evaluate numerical expressions involving whole-number exponents.  Interpret expressions that represent a quantity in terms of its context.  Interpret parts of an expression, such as terms, factors, and coefficients.

    Interpret complicated expressions by viewing one or more of their parts as a single entity. For example, interpret P(1+r)n as the product of P and a factor not depending on P.

     
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    Interpret expressions that represent a quantity in terms of its context.  Interpret parts of an expression, such as terms, factors, and coefficients, in context.  Use the structure of an expression to rewrite it in different equivalent forms. 

    Define appropriate quantities for the purpose of descriptive modeling. Given a situation, context, or problem, students will determine, identify, and use appropriate quantities for representing the situation.

     
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    Solve linear equations with rational number coefficients, including equations whose solutions require expanding expressions using the distributive property and collecting like terms.

    Apply properties of operations as strategies to add, subtract, factor, and expand linear expressions with rational coefficients.

     

     
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    Interpret expressions that represent a quantity in terms of its context.

    Interpret complicated expressions by viewing one or more of their parts as a single entity. For example, interpret P(1+r)n as the product of P and a factor not depending on P.  Understand that rational expressions form a system analogous to the rational numbers, closed under addition, subtraction, multiplication, and division by a nonzero rational expression; add, subtract, multiply, and divide rational expressions.

     
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    Interpret expressions that represent a quantity in terms of its context.

    Interpret complicated expressions by viewing one or more of their parts as a single entity. For example, interpret P(1+r)n as the product of P and a factor not depending on P.  Understand that rational expressions form a system analogous to the rational numbers, closed under addition, subtraction, multiplication, and division by a nonzero rational expression; add, subtract, multiply, and divide rational expressions.