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This pre-algebra math tutorial from NutshellMath offers introductory homework help in using variables and expressions. The teacher introduces the concept of algebraic variables as letters representing numbers and how they are used in algebraic expressions. Examples presented demonstrate writing algebraic expressions from textual descriptions and evaluating algebraic expressions for given values of variables.
In writing expressions, the tutorial shows how to translate terms such as sum and quotient into addition or division in an algebraic expression. In evaluating these algebraic expressions, the given values for the variables can be substituted in for the letters representing those variables and the expression can be evaluated.
As a precursor to studying equations, this introduction to variables and expressions is a first-step in understanding the language of algebra.
This pre-algebra math tutorial from NutshellMath offers introductory homework help in using variables and expressions. The teacher introduces the concept of algebraic variables as letters representing numbers and how they are used in algebraic expressions. Examples presented demonstrate writing algebraic expressions from textual descriptions and evaluating algebraic expressions for given values of variables.
In writing expressions, the tutorial shows how to translate terms such as sum and quotient into addition or division in an algebraic expression. In evaluating these algebraic expressions, the given values for the variables can be substituted in for the letters representing those variables and the expression can be evaluated.
As a precursor to studying equations, this introduction to variables and expressions is a first-step in understanding the language of algebra.