ALEKS Math Placement Exam

Integer

The whole numbers and their opposites

Quotient

The result of one number being divided by another

Difference

The result of one number being subtracted by another

Sum

The result of two numbers being added

Product

The result of two numbers being multiplied

Real

All positive and negative numbers and zero

Whole Number

Any "counting number" or zero

Even Number

Any integer divisible by 2

Positive Number

Any number greater than zero

Negative Number

Any number less than zero

Rational

Any number that can be expressed as the quotient of two integers

Odd Number

Any integer not divisible by 2

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

Factor

A number that is multiplied to form the product

Average Problems

Average x Number = Total

How to find Percent Increase or Decrease

Difference/Original = Percent Increase or Decrease

Multiples

The product of a number and a counting number

Simple Probability Problems

Outcomes giving desired result/Total possible outcomes

Irrational

Real numbers that are not rational

Greatest Common Factor

The greatest whole number that is a factor of two or more numbers

Least Common Multiple

The least whole number that is a multiple of two or more numbers

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.

Exponents and Roots

pg. 33

Logarithms

pg. 35