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Calling all maths experts for help with this please https://www.elevenplusexams.co.uk/forum/11plus/viewtopic.php?f=2&t=58113 
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Author:  worrybot [ Tue Jun 04, 2019 8:55 am ] 
Post subject:  Calling all maths experts for help with this please 
Please can any one explain how to solve this type of question? 1. Can you find numbers to replace A, B and C in this sum? (A,B and C are different numbers) A B C A B C + A B C ____________ B B B 2. Can you find a four digit number which is reversed when multiplied by 9? (i.e. ABCD X 9 = DCBA) 
Author:  Qeb2019 [ Tue Jun 04, 2019 9:47 am ] 
Post subject:  Re: Calling all maths experts for help with this please 
I think q1 is not correct. Q2. A has to be 1 otherwise any number time 9 will make 5 digits number. Therefore D is 9. B has to be 0 because any number times with 9 will have carry forward and make 5 digit number. And C is 8. The number is 1089. Hope that helps. 
Author:  worrybot [ Tue Jun 04, 2019 10:21 am ] 
Post subject:  Re: Calling all maths experts for help with this please 
Thank you for your help. I have the answer to Q1 and the question is correct. I am trying to understand a way to explain the solution to DS in a simplified way than trying to guess all possible outcomes. Thank you 
Author:  loobylou [ Tue Jun 04, 2019 10:34 am ] 
Post subject:  Re: Calling all maths experts for help with this please 
With question 1, this is how I did it but I am not a maths teacher and I don't know if there is a better way to teach/explain it. BBB has to be divisible by 3 as ABC X 3 = BBB. You can rule out 999, 666 and 333 because they don't give an ABC answer. You can rule out 111 because that wouldn't give a 3 figure answer. So I started to do 222÷3, 444÷3, 555 ÷3 etc until I got to the number that had the middle number the same as the B. Hope that makes sense. 
Author:  worrybot [ Tue Jun 04, 2019 10:40 am ] 
Post subject:  Re: Calling all maths experts for help with this please 
Quote: Hope that makes sense. Yes it does make perfect make sense. Thank you so much 
Author:  Qeb2019 [ Tue Jun 04, 2019 10:56 am ] 
Post subject:  Re: Calling all maths experts for help with this please 
worrybot wrote: Thank you for your help. I have the answer to Q1 and the question is correct. I am trying to understand a way to explain the solution to DS in a simplified way than trying to guess all possible outcomes. Thank you Sorry I’m wrong. Tried to do in my head. Loobylow gave perfect answer. 
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