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 ...

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.html

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

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

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

www.khanacademy.org/math/pre-algebra/pre-algebra-arith-prop/pre-algebra-order-of-operations/v/introduction-to-order-of-operations

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

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.

www.wyzant.com/resources/lessons/math/algebra/order_of_operations

The Order of Operations is very important when simplifying expressions and equations. The Order of Operations is a standard that defines the order in which you ...

www.mathplayground.com/order_of_operations.html

Play Order of Operations at MathPlayground.com! Use the order of operations to correctly solve the problems.

www.math.com/school/subject2/lessons/S2U1L2GL.html

When expressions have more than one operation, we have to follow rules for the order of operations: First do all operations that lie inside parentheses. Next, do ...