Composing and Decomposing Numbers


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Rationale:  Students apply knowledge of place value by building numbers using standard and expanded form.

CCSS: 2.NBT.A.1b Understand that the three digits of a three-digit number represent amounts of hundreds, tens, and ones; e.g. 706 equals 7 hundreds, 0 tens, and 6 ones.

Other CCSS for which this activity can be adapted:

1.NBT.B.2b,c  Understand that the two digits of a two-digit number represent amounts of tens and ones.

3.NBT.A.1  Use place value undersanding to round whole numbers to the nearest 10 or 100.



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