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Constructs and counts sets of MA.K.NSO.1.2 Given a number from MA.1.NSO.1.3 Compose and MA.2.NSO.1.2 Compose and decompose three-digit numbers in multiple ways using hundreds, tens and ones. Demonstrate each composition or decomposition with objects, drawings and expressions or equations. MA.3.NSO.1.2 Compose and decompose four-digit numbers in
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