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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".

Order of operations - Wikipedia

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 ...

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.

The Order of Operations: PEMDAS | Purplemath

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  ...

Intro to order of operations | Order of operations | Arithmetic ...

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.

Order of Operations - PEMDAS - Math is Fun

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 !

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

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

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

Order of Operations | MathPlayground.com

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.ask.com/youtube?q=Order of Operations&v=dAgfnK528RA
Apr 16, 2012 ... Learn More at mathantics.com Visit http://www.mathantics.com for more Free math videos and additional subscription based content!

Order of Operations - BrainPOP

www.brainpop.com/math/numbersandoperations/orderofoperations/

In this educational animated movie about Math learn about parenthesis, exponents, multiplications, divisions, addition, subtraction, and pemdas.