The Earthlings and Digit have been separated into two different rooms, and they need to set the elevator shaft to the correct height in each room in order to move through Hacker's statue. Both groups decide on a standard unit of measurement, a quarter, and use their length measurement skills to set each elevator shaft to the correct height.
The CyberSquad's only way out of a giant room is the keyhole. In order to reach the keyhole, they need to determine the length of the rope that will bring them to it. They learn that objects in this world are ten times bigger than objects in their own world, and they use that knowledge to estimate how far away the keyhole is.