<p>On math question 38 of the PSAT I put as my answer 1112 and they had 1111. The reason that our answers differed was that I rounded my answer to 2 decimal places after the 1st step in the problem, and they just typed in all 9 decimals numerous times throughout the problem. Do you think I could challenge them? It is important to me because I got a 214 which is very close to the Ohio cut-off of last year and this problem could make the difference.</p>
<p>i dont remember the problem,but i dont think it would work. sorry :(</p>
<p>by rounding your answer in an early step (which youre not supposed to do), your final answer was not correct whereas i am guessing 1111 was the exact (and also correct) answer</p>
<p>You are supposed to store the number, and only round on the last step. You can try, but doubt it'd work.</p>
<p>yeah you made a mistake, you werent robbed, its basic math to wait until the last step to round</p>
<p>Sorry, you should have stored the number internally in the calculator or something similar. Anyone with a graphing calculator could just type the entire expression on the same line and get the more exact answer.</p>
<p>I just took my PSAT and it had the same problem:</p>
<p>If x<em>10 = 5555 and x</em>9/y =5, what is the value of xy. </p>
<p>I was running out of time on this problem so i guesstimated at 1125, which wasn't a bad estimate, but I think the real answer is 1111.</p>
<p>
[quote]
If x<em>10 = 5555 and x</em>9/y =5, what is the value of xy.
[/quote]
So x = 555.5 and y = x*9/5 = 999.9, so xy = 555444.45?</p>
<p>I didn't know how to do powers... x*10 means x to the 10th power</p>