9x18x6+6/12=

Question

order of operations question why do you add 6 before dividing by 12

 

Answer 1

The way you wrote the equation, you must divide 6 by 12 to get 0.5 and add that to the product 9*18*6=972. So 972.5 is the answer.

On the other hand, if you had (9*18*6+6)/12, then you would add 6 first because it's inside of the parentheses, and contents inside parentheses must be evaluated completely before anything outside parentheses is worked. So (9*18*6+6)/12 = (972+6)/12 = 978/12 = 81.5 would be the answer.

Answer 2

Hello Terrie: The Order of Operations states that you solve a problem in the following order: P (Parenthesis) E (Exponents) M (Multiplication) D (Division) A (Addition) S (Subtraction) The short way to remember this is PEMDAS, or "Please Excuse My Dear Aunt Sally." In your problem, you have 9 x 18 x 6 + 6 / 12. You have multiplication, addition, and division there. Do your multiplication first. 9 x 18 = 162 162 x 6 = 972 Now the problem states 972 + 6 / 12. You have to do the division next, according to the order of operations. 6 / 12 = 1/2 Your problem now looks like this: 972 + 1/2 Your answer is 972 1/2 (or 972.5).

Answer 3

The way you have it written, you mulptiply 9, 18 and 6 to give you 972, then you divide 6 by 12 to give you 0.5 and then add them to give you 972.5. But if the problem is all over twelve then you would have the order of operations. In that case we would have (9x18x9 + 6)/12. So parentheses first, and that would be 9x18x6 + 6 giving you 978. then divide by 12.