1 Chapter Review

Connecting BIG ideas and Answering the Essential Questions

1 Variable You can use variables to represent quantities and to write algebraic expressions and equations.	Variables and Expressions (Lesson 1-1) a number n plus 3 n + 3	Patterns and Equations (Lessons 1-8 and 1-9) 1 variable: x + 3 = 5 2 variables: y = 2x
2 properties The properties of real numbers describe relationships that are always true. You can use them to rewrite expressions.	Operations With Real Numbers (Lessons 1-2, 1-5, and 1-6) 2 5 2 to the fifth 0 · 3 0 middle dot 3 2 + ( − 5 ) 2 plus open negative 5 close 7 ( − 3 ) 7 open negative 3 close Properties (Lessons 1-4 and 1-7) a · b = b · a   ( a · b ) · c = a · ( b · c ) eh middle dot b equals b middle dot eh open eh middle dot b close middle dot c equals eh middle dot open b middle dot c close a ( b + c ) = a b + a c eh open b plus c close equals eh b plus eh c

Choose the correct term to complete each sentence.

1. Real numbers that you cannot represent as a quotient of two integers are _ ? modified under bar with question mark above  numbers.
2. The sum of a number and its _ ? modified under bar with question mark above  equals zero.
3. You can simplify an expression by combining _ ? . modified under bar with question mark above , .
4. _ ? modified under bar with question mark above  is a number's distance from zero on a number line.
5. When you make conclusions based on patterns you observe, you use _ ? . modified under bar with question mark above , .

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