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Subtraction Algorithm




 


Videos solutions to help Grade 2 students learn how to relate manipulative representations to the subtraction algorithm, and use addition to explain why the subtraction method works.

Common Core Standards: 2.NBT.7, 2.NBT.9

Related Topics:
Common Core Math Resources, Lesson Plans & Worksheets for all grades

Common Core Math Video Lessons, Math Worksheets and Games for Grade 2

Common Core Math Video Lessons, Math Worksheets and Games for all grades

New York State Common Core Math Module 5, Grade 2, Lesson 13



Topic C: Strategies for Decomposing Tens and Hundreds Within 1,000

NYS Math Module 5 Grade 2 Lesson 13


Lesson 13 Homework

2. Solve using either mental math or the vertical method with number disks. Check your work using addition.
b. 153 – 38 = _______
d. 485 – 177 = _______

3. Complete the number sentence modeled by disks.




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