Alan's Ramblings - Number problems
http://81.149.45.14:80/2008/01/15/number_problems.html
I've just been looking at my son's maths homework, which is from the CGP Year Six Maths Workbook - Year Six in the UK is kids who are 10 to 11 years old. Here's the question: a) How many hundreds in 4695? I can think of four possible answers, ...enAlan BurlisonWed, 16 Jan 2008 01:50:42 GMTAlan Burlison2008-01-16T01:50:42ZenAlan BurlisonAlan's Ramblingshttp://81.149.45.14:80/Re: Number problems
http://81.149.45.14:80/2008/01/15/number_problems.html#comment1200448242000
<p>@Stephen, I'm not sure, but I suspect the answer they are looking for is 6. What frustrates me with the books is that they often discard the mathematics notation the kids already know, and use very badly written English instead. What should be an exercise in mathematics turns into one of untangling linguistic uncertainty.</p>
<p>As for the second example, your calculator must be very old ;-) - most newer ones allow you to input the entire expression, and then perform the calculation when you press '=', so they get the operator precedence right.</p>Wed, 16 Jan 2008 01:50:42 GMTtag:81.149.45.14,2008-01-15:default/c/1200403541000/12004482420002008-01-16T01:50:42ZRe: Number problems
http://81.149.45.14:80/2008/01/15/number_problems.html#comment1200438617000
<p>My six year old is also working on placement and had a similar question ("How many tens in 127?"), with a note hand-written by the teacher at the side saying "I will accept two possible answers."</p>
<p>@Stephen: Looking at the other questions on the page, it seemed clear that the desired answer in our case was '2'.</p>Tue, 15 Jan 2008 23:10:17 GMTtag:81.149.45.14,2008-01-15:default/c/1200403541000/12004386170002008-01-15T23:10:17ZRe: Number problems
http://81.149.45.14:80/2008/01/15/number_problems.html#comment1200419223000
<p>I agree about the first one, but I've read too many calculator manuals to agree about the second: the boxes are implying intermediate results should be taken. </p>
<p>(What answer does the book want for (a), anyway?)</p>
<p>- Stephen</p>Tue, 15 Jan 2008 17:47:03 GMTtag:81.149.45.14,2008-01-15:default/c/1200403541000/12004192230002008-01-15T17:47:03Z