Thanks Dsg, I get the impression tho that the answer is something more obvious. Direct quote from my daughter - ''You'll kick yourself when you see the answer"
Well, I cracked and asked the answer. It would appear that Juliefer was pretty close as the answer is 99 and 99 99ths. Not sure I can write that down here, but I reckon you get the idea!!
Cheers all.
But I would say there's nothing in the question to say that it 's a SUM - so eddiebun's answer seems equally as valid - and maybe even more appropriate for a nine year old's question.