Panel of Experts

Karl Schellscheidt

SAT Prep Expert

  • BSE, Princeton University '90
  • M.A., Secondary Education Seton Hall University '93
  • J.D., University of Pennsylvania Law School '00

Fred Hargadon

Dean of Admission

  • Swarthmore College
    (1964-1969)
  • Stanford University
    (1969-1984)
  • Princeton University
    (1988-2003)

Don Betterton

Financial Aid Expert

  • Director of Financial Aid, Princeton University (1973-2006)
  • Certified College Planner
  • Principal, Betterton College Planning

Seamus Malin

Admission Expert

  • Harvard University
    Dir. of Financial Aid
    (1966-1977)
    Asst. Dean of Admission
    (1977-1987)
    International Office Director
    (1987-2002)

SAT Math Factoid: “Even” Does Not Mean “Positive”

Videos   Math   SAT
Karl Schellscheidt - Nov 17, 2006

eprep test prep videoThis might seem like common sense, but don’t underestimate your ability to confuse basic concepts such as “even” and “positive”. Join me in this prepcast as we discuss the potential SAT Math problems pitfalls and how best to avoid them. Click on the “Play Now” button below to get going.

icon for podpress   - 3:30m -   Play Now | Play in Popup | Download
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SAT Math Factoid: “Even” Does Not Mean “Positive” (transcipt)

I would like to share some of my thoughts with you about the SAT’s and SAT preparation. This is in reference to the math section. An even number for example is: 2,4,6,8, 10 and a positive number is 1,2,3,4.

I think that if kids were asked the difference between an even number and a positive number, many could certainly give examples that would reveal that they know the difference. I am talking about this because when kids get to the SAT’s, inexplicably they often confuse even numbers with the positive. They are doing a problem that talks about consecutive even integers or consecutive positive integers and they confuse the two. When I wind up reviewing those wrong answers with students they say to me “I have no idea why I did that, I have no idea why I confused those two things. “I definitely know the difference between an even number and a positive number; I just wasn’t really thinking I can’t explain it.” What I tell kids in that situation is “I cannot tell you how many kids do that, don’t worry about it.”

But now that we know that you are capable of flipping those two things around, you need to be ultra aware of that. When you get to a problem that has either the word “positive” or “even”, slow yourself down and make sure you’re underlining, making a mark or doing something to remind you to get that one right.

There are plenty of other terms that kids get confused with, such as “radius” and “diameter.” Most kids clearly know the difference between the radius of a circle and the diameter of a circle. But you would be surprised how often they put in radius when they meant diameter or vice versa.

Two other confusing phrases are “circumference of a circle” and “the area of a circle.” A lot of kids end up using the wrong formula. When asked for circumference they use the area formula and vice versa. My point is not to list the different ways that some kids mess up, but rather I am trying to make you aware that it is human nature to confuse things sometimes. However, what you don’t want to do is confuse things when you are taking an SAT test. So when you are taking your SAT practice tests and find that you confused two words/phrases, highlight them and make a note for yourself. Then, next time you get to a problem that involves either concept, you can slow yourself down to make sure you get it right.

There is no excuse to miss a question over confusion. If you practice and realize that you are capable of making those kinds of mistakes, the best thing you can do is to remind yourself which types of concepts/words/phrases cause you confusion. Refresh you memory shortly before the test,and remember to slow yourself down for those problems. This will help you to maximize your score.

Karl Schellscheidt
ePrep
www.eprep.com

Copyright 2006 — All Rights Reserved, ePrep, Inc.

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6 Responses to 'SAT Math Factoid: “Even” Does Not Mean “Positive”'

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  1. November 18th, 2006 at 10:54 am

    Betty said,

    This is sort of off topic, but I didn’t know where else to ask this. What about zero? Is zero an even number? Or is it odd, or neither odd nor even? Is it positive, negative, or neither? I’ve taken some practice tests where I have stopped and wondered this, but I never figured it out.

    Thanks,

  2. November 19th, 2006 at 10:31 am

    Betty,

    Sorry for the delayed response. Your questions are good ones that are on topics that confuse a lot of people.

    Zero is considered an even number that is neither positive nor negative.

    Picture a bank account with no money in it. It doesn’t have a positive balance and it doesn’t have a negative balance. It has something in between — a zero balance. (Think of zero as the number that separates the positives from the negatives.)

    To help with the even-odd confusion, think of a number line.

    . . . -6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6, . . .

    You’ll notice that the zero falls in line with the pattern of even numbers.

    I hope my comments help. Good luck.

  3. July 1st, 2007 at 7:45 am

    elina said,

    hi. this was really helpful but i suggest you make a video about integers and whole numbers too. i think that is really confusing for alot of people. i would also like to ask if there is a SAT math syllabus online, i’m not sure abt wht i’m supposed to study.

    thanks alot,
    el

  4. June 24th, 2008 at 7:33 am

    Mina said,

    Zero is even?that’s ok?but it is prime or not

  5. June 25th, 2008 at 7:50 pm

    Karl said,

    Mina,

    Two is the lowest prime number. The ones you should know for
    the SAT are:

    2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, and 37.

  6. June 25th, 2008 at 7:51 pm

    Karl said,

    Elina,

    I’m not sure if there’s a syllabus online, but what you’ll need
    to know is set forth in the Official SAT Study Guide. Good luck.

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