

Unit 2 Addition and Subtraction of TwoDigit Numbers Grade 2 Math 

Description: In Unit 2, students develop fluency in adding and subtracting
within 100. They will use addition and subtraction to solve word problems by
using drawings and equations with a symbol for the unknown number to
represent the problem. 

Louisiana Student
Standards for Mathematics (LSSM) Instructional Outcomes 





Enduring Understandings: ·
Addition and subtraction can relate to length
using different strategies. ·
You can measure accurately using different
measuring tools. ·
Mental benchmarks can be created for measuring. ·
Measurement and comparison can be used to
determine how much longer one object is than another. 
Essential Questions: ·
How are addition and subtraction related to
length using different strategies? ·
How can I measure accurately using different
measuring tools? ·
What mental benchmarks for measuring do I use? ·
How do I compare to determine how much longer one
object is than another? 


