Place Value (Beyond Base 10)

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Place value is something we cover in elementary school. It seems simple, but I'd wager that very few adults really understand the topic. I sure didn't until I worked with non-base-10 number systems in college. Your students can get a taste of this mind-boggling experience by imagining what it would be like if we didn't have the number 9. What would each digit represent then?

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Related CCSS Math Standards

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Grade 4 4.NBT.1 
Grade 5 5.NBT.1