I have this on my phone, my 5 and 9 year olds like it!
I find the hard level pretty hard - it would be good IMO if you could change the mode to include negatives (maybe roots and squares [+other powers?], like here) and to expand the number range to. I seem to remember someone mentioning (probably on here) that they played a mental maths game where you had to give an operation on a number, you didn't say the answer but the next person had to add an operation, there was always a range (age adjusted) that the answer had to fit within: was that game the inspiration or was it just a novel idea for you?
I find the hard level pretty hard - it would be good IMO if you could change the mode to include negatives (maybe roots and squares [+other powers?], like here) and to expand the number range to. I seem to remember someone mentioning (probably on here) that they played a mental maths game where you had to give an operation on a number, you didn't say the answer but the next person had to add an operation, there was always a range (age adjusted) that the answer had to fit within: was that game the inspiration or was it just a novel idea for you?
Like the game anyway, thanks.