Approximately 27 pages. Use "save as" to download this chapter to your computer.
Number Rules
Consecutive Numbers
Divisibility
Fractions
Decimals
Exponents
Roots & Radicals
Note: this section is designed as an introduction for students scoring in the middle to low ranges.
Number Definitions
Integer |
a member of the set of positive whole numbers {1, 2, 3, . . . }, negative whole numbers {-1, -2, -3, . . . }, and zero. Fractions and decimals are not integers. Integers are also called "whole numbers". |
Positive number |
a number greater than zero, such as +5 (usually written simply as 5). |
Negative number |
a number less than zero, such as -5. |
Zero |
is neither positive nor negative and is an integer. |
Rational number |
a number that may be expressed as integers, decimals or fractions (a ratio of integers), as opposed to an... |
Irrational number |
a number that cannot be expressed by the ratio of two integers, such as π or √2.
Note: anything divided by zero is irrational. |
If you forget a rule (this happens all the time under test day pressure) consider using Experiments or Backsolving/Plug-In to get around it.
This is a partial free sample of our prep guide. To view the remainder of this page, purchase the 800score.com Prep Course.
|