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# PEDMAS ppt. For Mrs. Ewart

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### PEDMAS ppt. For Mrs. Ewart

1. 1. P.E.M.D.A.S What does it stand for??? Paretheses, Exponents, Multiplication, Division, Addition, & Subtraction In this lesson you will learn about using P.E.M.D.A.S to solve an order of operations math problem!!
2. 2. Order of Operations <ul><li>Parentheses, Exponents, Multiplication, & Division ( From left to right) </li></ul><ul><li>Then Addition & Subtraction ( From left to right) </li></ul><ul><li>Some people use this method to help remember the order of Operations. </li></ul><ul><li>Please excuse my dear aunt sally. </li></ul>
3. 3. STEPS to PEMDAS! <ul><li>First step to PEMDAS is well Parentheses, For example when given a problem like this : </li></ul><ul><li>3 + 2(-1 + 8) </li></ul><ul><li>You would first look at the parentheses and figure out that part of the problem. </li></ul><ul><li>Then the exponents, but since there is no exponents then you would move on to the next step in PEDMAS which is MULTIPICATION. & then division, and then addition, & subtraction. </li></ul>
4. 4. LETS WORK OUT SOME PROBLEMS :) !! <ul><li>First problem: </li></ul><ul><li>-4 + 8 x 5 </li></ul><ul><li>First lets multiply 8 times 5, which equals 40. </li></ul><ul><li>Then Now your problem looks like : -4 + 40 </li></ul><ul><li>So now you have 36 as your answer :) </li></ul><ul><li>Second Problem: </li></ul><ul><li>4 x 3 2 + 8 </li></ul><ul><li>Exponents goes first! </li></ul><ul><li>So 3 to the second power would equal 9. </li></ul><ul><li>So now our problem will look like </li></ul><ul><li>4 x 9 + 8 </li></ul><ul><li>Now we multiply 4 x 9 and get 36 + 8 </li></ul><ul><li>Our answer is 44! </li></ul>
5. 5. Now do some problems on your own! <ul><li>1 . </li></ul><ul><li>-8 x 4(2 - 3) </li></ul><ul><li>2. </li></ul><ul><li>3 + 2(-1 + 8) </li></ul><ul><li>3. </li></ul><ul><li>10 + 3 (2 + 6) </li></ul>
6. 6. CHECK YOUR ANSWERS! :) <ul><li>1. 32 </li></ul><ul><li>2. 17 </li></ul><ul><li>3. 104 </li></ul>
7. 7. Vocabulary! <ul><li>Parentheses : either or both of a pair of signs ( ) used in writing to mark off an interjected explanatory or qualifying remark, to indicate separate groupings of symbols in mathematics and symbolic logic, etc. </li></ul><ul><li>Exponents: a symbol or number placed above and after another symbol or number to denote the power to which the latter is to be raised: The exponents of the quantities x n , 2 m , y 4 , and 3 5 are, respectively, n, m, 4, and 5. </li></ul><ul><li>Multiplication: any generalization of this operation applicable to numbers other than integers, as fractions or irrational numbers. </li></ul><ul><li>Division: the operation inverse to multiplication; the finding of a quantity, the quotient, that when multiplied by a given quantity, the divisor, gives another given quantity, the dividend; the process of ascertaining how many times one number or quantity is contained in another. </li></ul><ul><li>Addition: a reaction in which two or more substances combine to form another compound. </li></ul><ul><li>Subtraction: the operation or process of finding the difference between two numbers or quantities, denoted by a minus sign (−). </li></ul>
8. 8. GREAT JOB!!!!