ALEKS Math Placement Exam 100% Correct Positive Number –Any number greater than zero Negative Number - Any number less than zero Whole Number - Any "counting number" or zero Integer - The whole numbers and their opposites Even Number - Any integer divisible by 2 Odd Number - Any integer not divisible by 2 Sum - The result of two numbers being added Difference - The result of one number being subtracted by another Product - The result of two numbers being multiplied Quotient - The result of one number being divided by another Factor - A number that is multiplied to form the product Greatest Common Factor - The greatest whole number that is a factor of two or more numbers Multiples - The product of a number and a counting number Least Common Multiple - The least whole number that is a multiple of two or more numbers Prime - A number greater than one whose only whole number factors are one and itself Composite - A number greater than one with more than two whole number factors Real - All positive and negative numbers and zero Rational - Any number that can be expressed as the quotient of two integers Irrational - Real numbers that are not rational
How to find Percent Increase or Decrease - Difference/Original = Percent Increase or Decrease Exponents and Roots - pg. 33 Logarithms - pg. 35 Average Problems - Average x Number = Total Simple Probability Problems - Outcomes giving desired result/Total possible outcomes Conditional Probability - The probability of an event, given another event has already occurred. Ex: The probability that a playing card from a standard deck is a 5, given that it is red, is 2/26. Joint Probability - The probability of two events occurring at the same time. Ex: The probability that a playing card from a standard deck is red and a 5 is 2/52.