This is a good activity for children to do to practise different skills.
Child chooses a number to write in the cloud. You could give a range eg. between 1 and 10 or 10 and 20 depending on the ability of the children. They they have to fill in all the boxes. I have uploaded a blank one too so you can write different things in to what I have done. I have put a small hundred square on there to help.