2.7 Adding and Subtracting within 1,000

Unit Goals

  • Students use place value understanding, the relationship between addition and subtraction, and properties of operations to add and subtract within 1,000.

Section A Goals

  • Add and subtract numbers within 1,000 without composition or decomposition, and use strategies based on the relationship between addition and subtraction and the properties of operations.

Section B Goals

  • Add numbers within 1,000 using strategies based on place value understanding, including composing a ten or hundred.

Section C Goals

  • Subtract numbers within 1,000 using strategies based on place value understanding, including decomposing a ten or hundred.
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