# Describe the relationship of digits in a number using place value concepts

teaches Common Core State Standards CCSS.Math.Content.4.NBT.A.1 http://corestandards.org/Math/Content/4/NBT/A/1
teaches Common Core State Standards CCSS.Math.Practice.MP2 http://corestandards.org/Math/Practice/MP2
teaches Common Core State Standards CCSS.Math.Practice.MP8 http://corestandards.org/Math/Practice/MP8

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Big Ideas: Each place value to the left of another is 10 times greater than the one to the right (e.g., 100 = 10 x 10). This lesson builds on students’ understanding of the relationship between digits in a number. The task helps students understand that digits can represent different amounts depending on the value given to them. In this task, the concept is modeled using money ($1,$10, and \$100 bills). Students’ exploration of the concepts in this lesson reinforces current understandings and builds toward future understandings of multiplication/division and measurement conversions. Additionally, this work will set the stage for students’ work with decimal numbers. Vocabulary: digits, numbers, place value Special Materials: play money (optional) base ten blocks (optional)