Bodmas

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In Bodmas we perform equations according to specific rules. =Order of Operations - //BODMAS//=

Operations
But, when you see something like... 7 + (6 × 52 + 3) ... what part should you calculate first? Start at the left and go to the right? Or go from right to left? Calculate them in the wrong order, and you will get a wrong answer ! So, long ago people agreed to follow rules when doing calculations, and they are:
 * "Operations"** mean things like add, subtract, multiply, divide, squaring, etc. If it isn't a number it is probably an operation.

Order of Operations

 * Do things in Brackets First.** Example:
 * [[image:http://www.mathsisfun.com/worksheets/images/yes.gif width="16" height="16" caption="yes"]] ||  || 6 × (5 + 3) || = || 6 × 8 || = || **48** ||   ||
 * [[image:http://www.mathsisfun.com/worksheets/images/no.gif width="16" height="16" caption="no"]] ||  || 6 × (5 + 3) || = || 30 + 3 || = || 33 || (wrong) ||
 * [|Exponents] (Powers, Roots) before Multiply, Divide, Add or Subtract**. Example:
 * [[image:http://www.mathsisfun.com/worksheets/images/yes.gif width="16" height="16" caption="yes"]] ||  || 5 × 22 || = || 5 × 4 || = || **20** ||   ||
 * [[image:http://www.mathsisfun.com/worksheets/images/no.gif width="16" height="16" caption="no"]] ||  || 5 × 22 || = || 10 2 || = || 100 || (wrong) ||
 * Multiply or Divide before you Add or Subtract**. Example:
 * [[image:http://www.mathsisfun.com/worksheets/images/yes.gif width="16" height="16" caption="yes"]] ||  || 2 + 5 × 3 || = || 2 + 15 || = || **17** ||   ||
 * [[image:http://www.mathsisfun.com/worksheets/images/no.gif width="16" height="16" caption="no"]] ||  || 2 + 5 × 3 || = || 7 × 3 || = || 21 || (wrong) ||
 * Otherwise just go left to right**. Example:
 * [[image:http://www.mathsisfun.com/worksheets/images/yes.gif width="16" height="16" caption="yes"]] ||  || 30 ÷ 5 × 3 || = || 6 × 3 || = || **18** ||   ||
 * [[image:http://www.mathsisfun.com/worksheets/images/no.gif width="16" height="16" caption="no"]] ||  || 30 ÷ 5 × 3 || = || 30 ÷ 15 || = || 2 || (wrong) ||

How Do I Remember It All ... ? BODMAS !

 * **B** || **B**rackets first ||
 * **O** || **O**rders (ie Powers and Square Roots, etc.) ||
 * **DM** || **D**ivision and **M**ultiplication (left-to-right) ||
 * **AS** || **A**ddition and **S**ubtraction (left-to-right) ||
 * **AS** || **A**ddition and **S**ubtraction (left-to-right) ||

Divide and Multiply rank equally (and go left to right). Add and Subtract rank equally (and go left to right) Then go from left to right doing any "A" //**or**// "S" as you find them. ||
 * [[image:http://www.mathsisfun.com/images/bodmas.gif width="150" height="106"]] ||  || After you have done "B" and "O", just go from left to right doing any "D" //**or**// "M" as you find them.