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Solution to yesterday's starter

Thank you for your answers. There was some great reasoning sent in. Well done!

This is what Ms Garland thinks:

I found that the 2 digit investigation revealed that all the answers were all multiples of 9 ! How fascinating!
I tried 82-28 = 54
           92-29 = 63
           43 -34=  9
When I investigated the 3 digit numbers
532 - 235 or  625 - 526 I found they were all multiples of 11!
Amazing !
Enjoy your investigations .. and remember ... ‘Be curious’

Here is Alex's answer:

Here’s Zoe's answer for today’s Maths Challenge.

I think that any number you have then reverse it and take that number away from the reverse you will always get an answer that is in the 3 times table; e.g

81 - 18 : 81-18= 63    63/3=21

738 – 837 : 837-738=99   99/3=33

9123 – 3219 : 9321-3219=5904    5904/3= 1968

11865 – 56811 : 56811-11865=44946    44946/3=14982

So, I think that any number you have it will always go into 3.

From Zoe

This is what Ayaan thinks:

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