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Subtracting real numbers Objectives Recognize subtraction as adding the opposite Evaluate expressions containing negatives To subtract a number, add its opposite
62=  8  (  4) =  3.7  4.3 =
1 3 2  1 = 5 10 Absolute value Remember your order of operations and treat absolute value bars like grouping symbols
87 =
 4  (10) = 78 = Evaluating expressions
Evaluate each expression for t = 2 and r = 7 r t = tr = t r =  r  (t ) = Evaluating expressions
Evaluate each expression for t = 2 and r = 7 t 2  rt 2 Think About It TRUE OR FALSE The difference of two numbers is less than the sum of those two numbers. The difference of two numbers is less than either of those two numbers. A number minus its opposite is twice the number Homework #___ p.34 (11 35 3rd column) (39, 40, 44, 48, 50) (11, 15, 19, 23, 27, 31, 35, 39, 40, 44, 48, 50) ...
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This note was uploaded on 05/16/2011 for the course ALGEBRA 098 taught by Professor Johnson during the Spring '09 term at Grand Valley State University.
 Spring '09
 Johnson
 Algebra, Real Numbers

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