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Year three maths Common Core State Standards
Operations and Algebraic Thinking
Represent and solve problems involving addition and subtraction.
Add and subtract within 20.
Work with equal groups of objects to gain foundations for multiplication.
Number and Operations in Base Ten
Understand place value.
Use place value understanding and properties of operations to add and subtract.
Measurement and Data
Measure and estimate lengths in standard units.
Relate addition and subtraction to length.
Work with time and money.
Represent and interpret data.
Reason with shapes and their attributes.
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