Progressions for the Common Core State Standards in ...
Progressions for the Common CoreState Standards in Mathematics (draft)c The Common Core Standards Writing Team21 April 2012Draft, 4/21/2012, comment 5, Number andOperations in Base TenOverviewStudents work in the base-ten system is intertwined with their workon counting and cardinality, and with the meanings and propertiesof addition, subtraction, multiplication, and division. Work in thebase-ten system relies on these meanings and properties, but alsocontributes to deepening students understanding of base-ten system is a remarkably efficient and uni-form system for systematically representing all numbers. Using onlythe ten digits0,1,2,3,4,5,6,7,8,9, every number can be repre-sented as a string of digits, where each digit represents a value thatdepends on its place in the string.
3 creating new units by bundling in groups of ten creates units called thousand, ten thousand, hundred thousand....In learning about decimals, children partition a one into 10 equal-sized smaller units,
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