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7th Grade Module 2

New or Recently Introduced Terms
 Additive Identity (The additive identity is 0.)
 Additive Inverse (The additive inverse of a real number is the opposite of that number on the real number line. For example, the opposite of −3 is 3. A number and its additive inverse have a sum of 0.)
 Break-Even Point (The point at which there is neither a profit nor loss.)
 Distance Formula (If ݑݠand ݑޠare rational numbers on a number line, then the distance between ݑݠand ݑޠis |ݑݦminus;ݑ޼.)
 Loss (A decrease in amount; as when the money earned is less than the money spent.)
 Multiplicative Identity (The multiplicative identity is 1.)
 Profit (A gain; as in the positive amount represented by the difference between the money earned and spent)
 Repeating Decimal (The decimal form of a rational number, For example, 13=0.3䀴Į)
 Terminating Decimal (A decimal is called terminating if its repeating digit is 0.)


Familiar Terms and Symbols
 Absolute Value
 Associative Property (of Multiplication and Addition)
 Commutative Property (of Multiplication and Addition)
 Credit
 Debit
 Deposit
 Distributive Property (of Multiplication Over Addition)
 Expression
 Equation
 Integer
 Inverse
 Multiplicative Inverse

 Opposites
 Overdraft
 Positives
 Negatives
 Rational Numbers
 Withdraw


Suggested Tools and Representations
 Equations
 Expressions
 Integer Game (See example to the right)
 Number Line
 Tape Diagram


Lesson 9

colored pencils


Lesson 15



Lesson 20