1. Professor Peabody saw a base-ten hopper make the moves shown below. He did not finish his drawing. What should he write under the number line?
  2. Professor Peabody started to record the moves of a base-ten hopper on the number line below. What should he write for the question marks?
  3. Observe the base-ten hopper's moves below.
    1. Where did the hopper start?
    2. Where did the hopper land when it finished hopping?
    3. How far is it from where the hopper started to where it landed? How do you know?