Prairie Lakes Area Education Agency

Spring Progress Monitoring and Instructional Strategies for 2.NBT.7

Add and subtract within 1000, using concrete models or drawings and strategies based on place value, properties of operations, and/or the relationship between addition and subtraction; relate the strategy to a written method.  Understand that in adding or subtracting three-digit numbers, one adds or subtracts hundreds and hundreds, tens and tens, ones and ones, and sometimes it is necessary to compose or decompose tens or hundreds. 

Progress Monitoring:  
Pose Add/Subtract problems for students to solve.  (Refer to Iowa Core Table 1) 

Instructional Activities: 
     Number Talks:  Addition/Subtraction problems within 1000 focusing on place value strategies
     Kathy Richardson:  Grades K-3, Activity 5.21

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