This text was written to help ease the transition from the numerical skills of arithmetic to the more abstract world of algebra. The text concentrates on conceptual understanding in place of rote application of algorithms and encourages students to explore algebraic concepts in an informal way to build a foundation for the subsequent formal study of algebra, as recommended in the NCTM Standards.
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Variables and Equations
3 Evaluating Algebraic Expressions
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add or subtract algebraic expression amount average building factor Building Number Skills calculator calories centimeters Check Choose a variable Combine like terms common fraction Commutative law compute convert cost decimal fraction decimal places decimal point Delbert distance distributive law Divide both sides earned equivalent EXAMPLE Exercise Explain in words feet Figure Find the area formula fraction bar gallons graph improper fraction inches invested Lesson Maintaining Skills marbles median meters miles per hour mixed number Move the decimal Multiply negative numbers number line numerator and denominator order of operations original percent perform perimeter pizza positive number pounds problem quarts quotient radius ratio rectangle Round your answers scientific notation score signed numbers Simplify each expression Solve the equation square root temperature test digit triangle unknown quantity volume whole number Write an algebraic Write an equation Write an expression y-intercept yards zero