Order of Operations By Carl Stephen. Order of Operations  Parentheses  Exponents  Square roots  Multiplication  Division  Addition  Subtraction.

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Presentation transcript:

Order of Operations By Carl Stephen

Order of Operations  Parentheses  Exponents  Square roots  Multiplication  Division  Addition  Subtraction

Order of Operations In doing the four basic operations, you follow three rules:  Do what is in parentheses, if there are parentheses, exponents, and square roots.  Do multiplication and division from left to right.  Do addition and subtraction from left to right.

Examples 5(3+7)-137(9-5)+18/(7-4)7(2+7)-15 5(10)-137(4)+18/37(9) =3728+6= =48 8+2(9-2) 8+2(7) 8+14=22

Evaluating Mathematical Expressions with Letters Remember: To evaluate a mathematical expression you need to substitute a particular number for a letter and then do the order of operations.

Examples Evaluate when a=2Evaluate when a=3; b=5 2(a+7)+38b-(a+4) 2(2+7)+38*5-(3+4) 2*9+38* =2140-7=33 Evaluate when a=4Evaluate when b=5 6a+54b-1 6*4+54* =2920-1=19