Students add and subtract within 200 to deepen understanding of base-ten, place value, and properties of operations.

31 Instructional Days (31 Hours)

Description

Students develop place value strategies to fluently add and subtract within 100 and develop conceptual understanding of addition and subtraction of multi-digit numbers within 200.

The Following Topics Are Included within this Module:

• Topic A:  Sums and Differences Within 100
• Topic B:  Strategies for Composing a Ten
• Topic C:  Strategies for Decomposing a Ten
• Topic D:  Strategies for Composing Tens and Hundreds
• Topic E:  Strategies for Decomposing Tens and Hundreds
• Topic F:   Student Explanations of Written Methods

Lessons are organized under each of the topic areas.