Odd an even numbers - differentiated

There are 10 numbers on each sheet, and each sheet is differentiated by using bigger/smaller numbers. I created it for, and used it with a Year 1/2 class, so this was the right amount for them. Filling the page with loads of numbers was not appropriate because otherwise it would have taken them ages, and there was no need to make them do loads because they showed they understood the concept by doing what was on the sheet. If they did it quickly they were able to try the next one, etc.