Math Chapter 2 Test

# Math Chapter 2 Test - Term Definition a b is a real number...

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Term: a + b is a real number Definition: Addition Closure Term: ab is a real number Definition: Multiplication Closure Term: a + b = b + a Definition: Addition Commutative Term: ab = ba Definition: Multiplication Commutative Term: There is a number 0 such that a + 0 = a and 0 + a = a Definition: Addition Identity

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Term: There is a number 1 such that 1 x a = a and a x 1 = a Definition: Multiplication identity Term: For every real number a, there is a real number -a such that a + (-a) = 0 Definition: Addition Inverse Term: For every nonzero real number a, there is a real number 1/a such that a(1/a) = 1 Definition: Multiplication Inverse Term: Natural Numbers Definition: 1, 2, 3 Term: Whole numbers Definition: 0, 1, 2, 3
Term: Integers Definition: -3, -2, -1, 0, 1, 2, 3, Term: Rational Numbers Definition: p/q, where p and q are integers and q doesnt = o Term: Irrational Numbers Definition: numbers whose decimal part does not

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