Basic number

Review order of operations, common factors, multiplication and division, and other basic number operations

The links to these instructional YouTube clips come from The Organic Chemistry Tutor.

Order of operations [length: 15m:51s]

This video provides a basic introduction into order of operations. (Sometimes referred to as BEDMAS or PEMDAS).

This video details the process of addition and subtraction of positive and negative numbers using a number line.

This video details a basic introduction into multiplying and dividing numbers. It explains how to perform basic multiplication by hand as well as long division.

 

This video details how to find the greatest common factor or two or 3 numbers.

 

This video  explains the difference between prime and composite numbers.  It discusses how to write the prime factorization of large numbers.

 

This video explains how to multiply integers with different signs and how to multiply negative integers and large integers as well.

  

This video explains how to simplify surds (or radicals) It covers plenty of examples and practice problems simplifying square roots with fractions, adding and subtracting radicals, as well as dividing radical expressions.

 

This video details how to multiply algebraic fractions.

This video explains how to find the next term in a number series.  It provides plenty of examples of finding patterns in arithmetic and geometric sequences.