Add and Subtract within 100 (with regrouping) - Alien Math Games

Help an alien get into a spaceship by solving 30 addition and subtraction tasks up to 100 with regrouping.

This cute alien will motivate students to write the correct answers because this is the only way that the alien get into the spaceship.

Students can play the mental math game several times because tasks are never the same.

By looking at the alien position at the students' screens, the teacher gets an immediate insight into how well they add and subtract.