Beach Ball Addition is a great way to practice adding tens to a 2 digit number. This covers the common core standard 1.NBT.4. Students spin the 2 digit number spinner and then the tens spinner. They start with the the 2 digit number and count up by tens. Then they cover the beach ball with that number.
This game is also included in a bundle.
Adding Tens to a 2 Digit Number Bundle
I also have games for subtracting tens from a 2 digit number.
Subtracting Tens from a 2 Digit Number Bundle