Can you help assemble the Whole Number Express? First, line up the sets of wheels from the largest whole number to the smallest. Next, figure out each whole number's word form and two expanded forms so you can put everything together. Wait, what about the mystery rail car? Crack the place value clues, then slide it into its correct spot on the Whole Number Express.

This learning center helps kids become familiar with expressing whole numbers in standard form, word form, and two types of expanded form. It also gives them a hands-on way to practice place value for numbers up to 200,000.