Addition Two Number to 20 with regrouping: Mental Math Game

This mental math game includes addition up to 20 with regrouping.

Students have to add two numbers and write the sum. They are motivated to calculate all answers correctly because this is the only way that dog brings the stick to the man.

The progress of each student is very easy to monitor.

The game can be played at school or at home.

The tasks in the game change each time you reopen it.