Quick homemade game to help with addition to ten

Feeling very conscious that Ollie returns to school tomorrow and we have let his reading and maths slip rather from lack of practice!

Quickly whipped up this game to help him remember the pairings of numbers that add up to ten. It's based on memory but the pair you turn over must add up to ten. I made it by quickly writing the numbers on paper and then I had to stick extra paper on the back as you could see through the back otherwise. You could do it on card and spend a lot more time on making it look good. 

He's definitely worse than he was at the end of last term, but he was getting quicker by the end of the second game!