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INTEGERS:  ADDITION AND SUBTRACTION

This unit is about number theory, integers, and the use of signed numbers.  The integers are a subgroup of the Real Numbers.  Integers have signs, but do not have any decimals or fractions.  Integers will be discussed as a subgroup of the set of real numbers.  The order of operations will be reviewed as a reminder of the rules that must be followed in mathematics when evaluating expressions.  A close look at comparing integers and finding the absolute value of an integer will aid in taking a closer look at the introduction of adding and subtracting integers.  In the final part of this unit, the rules that apply to adding and subtracting integers will be applied to adding and subtracting fractions and decimals with signs.

Numbers and Number Lines (05:28)
Rational Numbers (08:44)
Order of Operations (10:50)
	Practice Worksheet: Order of Operations
	Answer Key (Password Protected)
Integers (03:50)
	Practice Worksheet: Represent Integers
	Answer Key (Password Protected)
	Practice Worksheet: Compare Integers
	Answer Key (Password Protected)
Addition (06:37)
Subtracting Integers (09:34)
	Practice Worksheet: Add and Subtract Integers
	Answer Key (Password Protected)
	Practice Worksheet: Add and Subtract Integers and Absolute Value of Integers
	Answer Key (Password Protected)
	Practice Worksheet: Compare Integers and Absolute Value of Integers
	Answer Key (Password Protected)
	Practice Worksheet: Add and Subtract Decimal Numbers with Signs
	Answer Key (Password Protected)