My students needed a lot of scaffolding and help with this strategy, so I made practice sheets that are straightforward and repetitive. The first one reviews adding a one-digit number to 10. The second gives them practice making a ten in a problem with three addends. The third introduces the idea of decomposing one number in the problem to make a ten with the other addend. I have also included a couple of practice sheets to reinforce how to make tens.