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Whiteboardmaths.com © 2004 All rights reserved

Decimal Places (Rounding) Numbers can be rounded to 1,2, 3 or more decimal places. Rounding to 1 d.p 5 or bigger ? or bigger ? or bigger ? 4.9 No Yes

Decimal Places It is often necessary/convenient/sensible to give approximations to real life situations or as answers to certain calculations. For example if a case of wine containing 6 bottles costs £25 then you could price a single bottle by calculating £25  6 = £ It would be pointless to write out all the numbers on your calculator display. Since we are dealing with money (pounds and pence) we only need 2 decimal places (2 d.p.) So it would be much better to write down £4.17.

Rounding to 1 d.p or bigger ? or bigger ? or bigger ? or bigger ? or bigger ? or bigger ? 4.9 No Yes

Rounding to 2 d.p or bigger ? or bigger ? or bigger ? or bigger ? or bigger ? or bigger ? 0.40 No Yes No Yes

Rounding to 3 d.p or bigger ? or bigger ? or bigger ? or bigger ? or bigger ? or bigger ? Yes No Yes