Random Math-exercices posssible for kids?

Hi @darren , thank you so much

Please can you ask a tuturial to make something for kids that must understand maths…
image
something like this:


I found it diffucult to find ‘how to check if the answer is correct’?

sums between 0 and 1000 for example…


and comma numbers, 0.1 → 0.001

and percentage = divide…

how to add a check for the correct answer?

Thanks to help me
Karel