## Order of operations

en.wikipedia.org/wiki/Order_of_operations

In mathematics and computer programming, the order of operations (or operator precedence) is a collection of rules that define which procedures to perform first ...

## Order of Operations - Math Goodies

www.mathgoodies.com/lessons/vol7/order_operations.html

Order of Operations presented by Math Gooodies. Learn order of operations with our self-paced instruction.

To follow the order of operations in math, first do any calculations that are inside parentheses and take care of exponents and roots. Next, perform all multiplications and divisions, left to right. Then do all additions and subtractions, left to right.
A handy mnemonic for remembering the order of operations is PEMDAS, or "Please excuse my dear aunt Sally".

## The Order of Operations: PEMDAS - Purplemath

www.purplemath.com/modules/orderops.htm

Explains the order of operations 'PEMDAS') in plain terms, points out common mistakes, and presents worked examples.

## Order of operations example | Order of operations | Khan Academy

Work through a challenging order of operations example with only positive numbers.

## MathSteps: Grade 4: Order of Operations: What Is It? - Education Place

www.eduplace.com/math/mathsteps/4/a/index.html

But what happens when an expression requires multiple operations? Over time, mathematicians have developed a set of rules called the order of operations to ...

## History of the Order of Operations - Math Forum - Ask Dr. Math

mathforum.org/library/drmath/view/52582.html

Can you give me some facts and conjectures about when, where, and why the order of operations was established?

## Who invented the order of operations? | Reference.com

www.reference.com/history/invented-order-operations-5906255dc205d235

In mathematics, the order of operations, believed to have been in its formative stages in the 16th century, is not credited to a single inventor. This mathematical  ...

## Have the order of operations changed?

www.math.ucdenver.edu/~jloats/Student pdfs/4_Order of OperationsSass.pdf

about the history of order of operations, but I now believe it is important to share with my students where it came from and how/why it was developed.

Popular Q&A
Q: How to Use Order of Operations.
A: Operations are the method of solving mathematical equations. Mathematical operations include addition, multiplication, subtraction and division. The order of pe... Read More »
Source: www.ehow.com
Q: How to Apply the Order of Operations.
A: Community Q&A. Lengthy expressions really aren't that hard if you just do things one at a time and in the right order. The reason this exists is so mathematicia... Read More »
Source: www.wikihow.com
Q: What is integers and order of operations?
A: Integers are the numbers .3,2,0,1,2,3. where the . called an ellipsis means that we keep going on forever. so .1 ,2, 3 means 1,2,3,4,5, and keep counting foreve... Read More »