Between every two dice there is a slot. If you put the robot there, it changes both its neighboring dice.
The sign in the top left of its card applies to the left neighbor, the one in the top right to the right neighbor - plus turns one up, minus turns one down, equals leaves it.
For each slot, first work out the two new dice numbers and then check the condition. Exactly one slot fits.
Example
For parents
What does this exercise practice?
The robot slot practices two steps in a row - first plus or minus one, then checking the sum or the difference.
Common pitfalls
A common mistake is using the old dice numbers. The condition only applies after the turning.
How to practice at home
Lay out a row of real dice and use a slip of paper as the robot to try out where the condition holds.