SAT Prep - Math

The absolute value of a number or expression is its magnitude. To determine the absolute value, just ignore the sign of the number. The absolute value of a positive number is same as the number itself.  The absolute value of a negative ... read more ››

Two integers are said to be consecutive if the difference between them is 1. You can have 3 or more numbers that are consecutive numbers provided the difference between each of them is 1. For Example:   1 and 2 are consecutive integers ... read more ››

Representing a Number as Digits All numbers are composed of digits and each of these digits contribute to the value of the number based on their position. Example: Number 26 has 2 in the tenths place and 6 in the ones place. As the following table in... read more ››

A number line is a representation of real numbers, both positive and negative, and integers and decimals on a line that extends to infinity in both directions.  Numbers are represented on the number line in the form of equal partitions marked on... read more ››

Types of Numbers Many Test questions refer to types of numbers e.g. "integers". You are expected to know what are the different types of numbers and what they mean. Natural Numbers Natural numbers are numbers that can be used for counting ... read more ››

While the positive or negative classification can apply to both integers and decimals/ fractions, Odd or Even is a classification that only applies to integers. Even Integers Even integers are integers that are divisible by 2 i.e. when an even number... read more ››

In Math, there are four basic number operations that can be performed: Addition i.e. a+b Subtraction i.e. a - b Multiplication i.e. a × b Division i.e. a ÷ b In this lesson we will talk about some fundamental number con... read more ››

The order of operations is a convention that guides us in what order arithmetic operations need to be carried out in order to evaluate an expression. For example consider an expressions like the following? How do you evaluate such an expression? In ... read more ››

What are Positive and Negative Numbers? Any number that is greater than 0 is a positive number. Examples of positive numbers are 2, 2.5, 0.4, etc. On the other hand any number that is less than 0 is called a negative number.  Examples of negativ... read more ››

A prime number is a natural number which is divisible by exactly 2 numbers: 1 and itself.  They are not divisible by any other numbers - in other words, no other number divides evenly into them without a remainder.   2 is the smal... read more ››

In SAT you will sometimes get problems based on problem specific operations. Sometimes these operations may have their own symbol such as , , , etc. The operations that need to be performed on one or more numbers are defined within the problem itself... read more ››