When adding, you can “associate” and add any terms first and then add the other term.
When multiplying, you can “associate” and multiply any factors first and then multiply the other factor.
The operations of both addition and multiplication are associative
The operation of multiplication distributes over addition
The distributive property also holds for a factor that is multiplied on the left.
Rules of Signs
A positive times a negative is
A negative times a positive is
The negative of a negative
CAUTION: Remember that the value for a and/or b could also be positive or negative.
A positive divided by a negative or
A negative divided by a positive is
A negative divided by a negative is
I wish to thank Shawna Haider from Salt Lake Community College, Utah USA for her hard work in creating this PowerPoint.
Shawna has kindly given permission for this resource to be downloaded from www.mathxtc.com and for it to be modified to suit the Western Australian Mathematics Curriculum.
Head of Mathematics
St Stephen’s School – Carramar