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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 reflect conventions about which ...

This example shows the steps and clarifies the purpose of order of operations: to have ONE way to interpret a mathematical statement.

The order of operations tells us the order to solve steps in expressions with more than one operation. First, we solve any operations inside of parentheses or ...

www.mathsisfun.com/operation-order-pemdas.html

"Operations" mean things like add, subtract, multiply, divide, squaring, etc. ... Warning: Calculate them in the wrong order, and you will get a wrong answer !

www.purplemath.com/modules/orderops.htm

Explains the order of operations ('PEMDAS' or 'BODMAS') in plain terms, points out common mistakes, and presents worked examples of simplifying by applying  ...

www.mathgoodies.com/lessons/vol7/order_operations

We need a set of rules in order to avoid this kind of confusion. Mathematicians have devised a standard order of operations for calculations involving more than  ...

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

The Order of Operations. When children initially learn addition, subtraction, multiplication, and division, they begin by performing operations on two numbers.