Rounding Off an Answer to Fit the SituationDate: 09/12/2004 at 16:40:17 From: Yuna Subject: Rounding Can you describe one situation when you might purposely round up, and another when you might purposely round down? Date: 09/12/2004 at 16:54:14 From: Doctor Dotty Subject: Re: Rounding Hi Yuna, Thanks for the question. One question could be something like: "You have 40 square meters of wall to paint. A tin of paint covers 15 square meters of wall. How many tins of paint do you need to buy?" Another question could be something like: "You have 8 tins of paint. You need 3 tins of paint to cover a wall. How many complete walls could you paint?" One of those questions needs the answer rounded down, and the other needs it rounded up. Can you see which is which and why? - Doctor Dotty, The Math Forum http://mathforum.org/dr.math/ |
Search the Dr. Math Library: |
[Privacy Policy] [Terms of Use]
Ask Dr. Math^{TM}
© 1994- The Math Forum at NCTM. All rights reserved.
http://mathforum.org/dr.math/