11 Plus Exams Forumhttps://www.elevenplusexams.co.uk/forum/11plus/ Calling all maths experts for help with this pleasehttps://www.elevenplusexams.co.uk/forum/11plus/viewtopic.php?f=2&t=58113 Page 1 of 1

 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 B2. 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 youSorry I’m wrong. Tried to do in my head. Loobylow gave perfect answer.

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