View of /trunk/NationalProblemLibrary/CollegeOfIdaho/setAlgebra_01_02_OperationsWithRealNumbers/12IntAlg_04_OperationsWithReals.pg

    1 ##DESCRIPTION
    2 ##  Add signed fractions ****Need to do
    3 ##
    4 ##ENDDESCRIPTION
    5 ## DBsubject('Intermediate Algebra')
    6 ## DBchapter('Ch 01: Algebra, Mathematical Models and Problem Solving')
    7 ## DBsection('Operations with Real Numbers and Simplifying Algebraic Expressions')
    8 ## KEYWORDS('real numbers','operations with signed numbers')
    9 ## TitleText1('Essentials of Intermediate Algebra')
   10 ## EditionText1('1')
   11 ## AuthorText1('Blitzer')
   12 ## Section1('1.2')
   13 ## Problem1('')
   14 ## Author('RA Cruz')
   15 ## Institution('The College of Idaho')
   16 ## Date: 2007/09
   17 
   18 
   19 DOCUMENT();        # This should be the first executable line in the problem.
   20 
   21 loadMacros(
   22   "PGstandard.pl",
   23   "MathObjects.pl",
   24   "contextLimitedNumeric.pl"
   25 );
   26 
   27 TEXT(beginproblem());
   28 
   29 ######################################
   30 #  Setup
   31 
   32 $a1 = random(-12,-2,1);
   33 do {$a2 = random(-12,-2,1);} while ($a1==$a2);
   34 
   35 $b1 = random(-12,-2,1);
   36 $b2 = random(2,12,1);
   37 
   38 ######################################
   39 #  Main text
   40 
   41 BEGIN_TEXT
   42 Add as indicated:
   43 $PAR
   44 a) \( $a1 + ($a2) = \)  \{ ans_rule(10) \}
   45 $PAR
   46 b) \( $b1 + $b2 = \)  \{ ans_rule(10) \}
   47 $BR
   48 
   49 END_TEXT
   50 
   51 ######################################
   52 #  Answers
   53 
   54 Context("LimitedNumeric");
   55 
   56 $ans_a=Real($a1 + ($a2))->reduce;
   57 ANS($ans_a->cmp);
   58 
   59 $ans_b=Real($b1 + $b2)->reduce;
   60 ANS($ans_b->cmp);
   61 
   62 $showPartialCorrectAnswers = 1;
   63 
   64 ######################################
   65 
   66 
   67 COMMENT('MathObject version');
   68 ENDDOCUMENT();