For this weeks Math word problem, I chose Number Five, [25- (-7) + 12] + (-15) x 5. First you have to do whatever is inside the brakets. So 25 – -7, L(leave) C(Change) O(Opposite). So using the LCO it will be like this 25 + +7= 32. Up next, you add 12 and 32 giving you a sum of… uhh 44. YAY! we cleared what is in the brakets. you have 44 + (-15). you don’t use the leave change and opposite because that is only on subtraction. Let me tell you somethin’ you are adding or I am adding a positive number with a nagative number so its sort of subtracting, but we still don’t use the LCO. Lets do the question 44 + -15 I got 29. We don’t put it as a negative because the positive number is greater than the negative number. you understand? if not then tell Mrs. Judd. All we have To do is multiply 29 and 5. lets find the answer……… I got 145. I think that is the answer. Okay Bye 
Mrs Judd · February 5, 2011 at 11:04 am
Hi Joel,
Your explanation contains humor, which is way cool. However, you have a problem with your step 44 + (-15) * 5. Using order of operations, does addition come before multiplication? Go back and recalculate from this point then resubmit for full credit.
Mrs Judd