This google sheet activity requires students to add and subtract matrices. Students enter their answers into the text boxes. If the box turns green, the number is correct! If the box turns red, they need to check their work.This is a fun, engaging, self-checking google sheet activity that students will enjoy! You can share through google classroom and make a copy for each student for them to have their own activity.Answer key is included but please remember to HIDE the tab before sharing with st