You can do the math with this purple block! Works just like normal addition (5+2=7). You can also use variables (my_variable + 2) to have the total of the block change as the variable changes.
Combine this with Set Position and an object variable to make one object move in tandem with another (set position to Object A’s position + 100)
If you use + on two texts together, it will join them. For example, you could do "Hello " + the Username user variable, to have an object say hello to a user.