Maths Question and speed
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Maths Question and speed
I was looking at one of the Maths questions with my daughter. The question is
Gretchen pays $29.99 for a DVD on her holiday. The exchange rate is £1=$1.90. How much was DVD in pounds?
What is the best way to do this question in shortest possible time?
Thanks for the help !!
Gretchen pays $29.99 for a DVD on her holiday. The exchange rate is £1=$1.90. How much was DVD in pounds?
What is the best way to do this question in shortest possible time?
Thanks for the help !!
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Re: Maths Question and speed
Well for a starters the exchange rate is not realistic anymoredevg wrote:I was looking at one of the Maths questions with my daughter. The question is
Gretchen pays $29.99 for a DVD on her holiday. The exchange rate is £1=$1.90. How much was DVD in pounds?
What is the best way to do this question in shortest possible time?
Thanks for the help !!
and I though DVDs were cheaper in the US anyway... unless it is maybe a box set?
Personally I would just go for long division... divide 299.9 by 19
but you could be at it for a while... it's not exact... does it say how close you need to get... number of DP?
£15.78...
Regards
SVE
Animis opibusque parati
Hi SVE,
Thanks for the response. I agree that it is better to do it this way and not try dividing 2999 by 190. For CSSE Maths, I think it is apprxmt. 1 minute a question. Hence wanted to know, if there were faster ways of doing this. The question paper which we were looking at wanted the answer in 2 decimals.
Thanks for the response. I agree that it is better to do it this way and not try dividing 2999 by 190. For CSSE Maths, I think it is apprxmt. 1 minute a question. Hence wanted to know, if there were faster ways of doing this. The question paper which we were looking at wanted the answer in 2 decimals.
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- Posts: 1245
- Joined: Fri Jul 06, 2007 9:31 pm
maybe an estimate...devg wrote:Hi SVE,
Thanks for the response. I agree that it is better to do it this way and not try dividing 2999 by 190. For CSSE Maths, I think it is apprxmt. 1 minute a question. Hence wanted to know, if there were faster ways of doing this. The question paper which we were looking at wanted the answer in 2 decimals.
29.99 approx $30
1.9 approx 2 $/£
answer £15
But 2dp suggests it's got to be division...
Regards
SVE
Animis opibusque parati