Here's a jam-packed freebie for you! Use the cards to compare different forms of numbers with the greater than, less than, and equal cards, match the different representations of numbers, arrange the cards in order.....
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Here is a whole group activity to practice representing numbers in different ways. Students match up four different ways of representing numbers. As an extension, let all the students with expanded form line up in ascending order, all the students with place value models line up, etc.