Other
Dans Math: Lessons: Order of Operations
This is a brief explanation of the order of operations that includes some simple examples. It also has directions for dealing with parentheses and exponents.
NumberNut
Number Nut: Ordering Operations With Parentheses
A thorough lesson on order of operations that includes detailed examples and related vocabulary.
Ducksters
Ducksters: Practice Math Questions: Triple Digit Multiplication
Practice your triple-digit multiplication skills with these practice problems.
Khan Academy
Khan Academy: Multiplying Negative Numbers Review
Summarizes the rules for multiplying with negative numbers, along with examples, and presents three practice questions.
Ducksters
Ducksters: Kids Math: Order of Operations
On this site find information about math order of operations for kids. Learn with problems, examples, and tricks to help remember the order of operations.
Calculator Soup
Calculator Soup: Long Multiplication Calculator
Multiplication of positive or negative whole numbers or decimal numbers as the multiplicand and multiplier to calculate the product using long multiplication. The solution shows the work for the Standard Algorithm.
Calculator Soup
Calculator Soup: Long Subtraction Calculator With Regrouping
Do long subtraction with regrouping or borrowing. Enter whole numbers or decimal numbers to find the difference. This calculator finds the answer using long subtraction with regrouping and shows the work step by step.
Quia
Ixl Learning: Additive Inverses
Brush up on your math skills relating to additive inverses then try some practice problems to test your understanding.
Varsity Tutors
Varsity Tutors: Hotmath: Algebra Review: Perfect Numbers
Find a quick, concise explanation of perfect numbers. Examples are given and clearly explained.