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An expression is a mathematical statement where variables and operations are combined. Examples. 2a + 5 is an expression involving the variable a; 5(y 2 - 6) is another expression; What is an algebraic equation? An equation is where an algebraic expression is equal to something, which might be a number, or another algebraic expression. Examples
In Lesson 6, students look at expressions involving products, quotients, and exponents. Unlock features to optimize your prep time, plan engaging lessons, and monitor student progress. A statement describing an expression reads “the product of 2 and the sum of n and 3.” Gus writes the algebraic expression 2 n + 3 to represent the statement.
Numerical expressions can be evaluated using the order of operations. Paying close attention to the structure of an expression, such as what role the parentheses play or where the exponents are, can provide insight into how an expression is evaluated to a single number.
6.EE.B.6 — Use variables to represent numbers and write expressions when solving a real-world or mathematical problem; understand that a variable can represent an unknown number, or, depending on the purpose at hand, any number in a specified set.
In Grade 5 students worked with writing and interpreting numerical expressions. How do powers affect numbers? How can order of operations, the distributive property, and combing like terms help evaluate expressions? How can an algebraic expression help me solve a real-world application problem? Why do we use variables in mathematics?
Read, write, and simplify numerical expressions. Evaluate variable expressions for specific values of the variables. Apply the distributive property to generate equivalent expressions.
Describe your strategies for matching the numerical expression cards to word cards. Explain your reasoning and justification. Identify any mistakes you made and what you learned from them.
