The kids who are rocking it already know they are and don't need any more motivation than you saying, 'Great job!' but the kids who are struggling also know that very well and you want to be careful not to embarrass them. Real quick - if you do these at their own pace, I really recommend not having 100% scores be public/hung up/announced, doing awards, or publicly displaying kids' progress. :) There are 79 different practice tests/sheets like this so it's a ton of practice!
I should've used a bigger number as an example so you could see the sums to 20 but I think you get the point. I made 3 levels for each number with sums to 10 (bottom row of above picture), 3 levels for each number with sums to 20 (top row of above picture), and 2 levels of subtraction within 10 for each number (not pictured).
